1 /* Select target systems and architectures at runtime for GDB.
3 Copyright (C) 1990-2012 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 #include "gdb_string.h"
36 #include "gdb_assert.h"
38 #include "exceptions.h"
39 #include "target-descriptions.h"
40 #include "gdbthread.h"
43 #include "inline-frame.h"
44 #include "tracepoint.h"
46 static void target_info (char *, int);
48 static void default_terminal_info (char *, int);
50 static int default_watchpoint_addr_within_range (struct target_ops
*,
51 CORE_ADDR
, CORE_ADDR
, int);
53 static int default_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
55 static void tcomplain (void) ATTRIBUTE_NORETURN
;
57 static int nomemory (CORE_ADDR
, char *, int, int, struct target_ops
*);
59 static int return_zero (void);
61 static int return_one (void);
63 static int return_minus_one (void);
65 void target_ignore (void);
67 static void target_command (char *, int);
69 static struct target_ops
*find_default_run_target (char *);
71 static LONGEST
default_xfer_partial (struct target_ops
*ops
,
72 enum target_object object
,
73 const char *annex
, gdb_byte
*readbuf
,
74 const gdb_byte
*writebuf
,
75 ULONGEST offset
, LONGEST len
);
77 static LONGEST
current_xfer_partial (struct target_ops
*ops
,
78 enum target_object object
,
79 const char *annex
, gdb_byte
*readbuf
,
80 const gdb_byte
*writebuf
,
81 ULONGEST offset
, LONGEST len
);
83 static LONGEST
target_xfer_partial (struct target_ops
*ops
,
84 enum target_object object
,
86 void *readbuf
, const void *writebuf
,
87 ULONGEST offset
, LONGEST len
);
89 static struct gdbarch
*default_thread_architecture (struct target_ops
*ops
,
92 static void init_dummy_target (void);
94 static struct target_ops debug_target
;
96 static void debug_to_open (char *, int);
98 static void debug_to_prepare_to_store (struct regcache
*);
100 static void debug_to_files_info (struct target_ops
*);
102 static int debug_to_insert_breakpoint (struct gdbarch
*,
103 struct bp_target_info
*);
105 static int debug_to_remove_breakpoint (struct gdbarch
*,
106 struct bp_target_info
*);
108 static int debug_to_can_use_hw_breakpoint (int, int, int);
110 static int debug_to_insert_hw_breakpoint (struct gdbarch
*,
111 struct bp_target_info
*);
113 static int debug_to_remove_hw_breakpoint (struct gdbarch
*,
114 struct bp_target_info
*);
116 static int debug_to_insert_watchpoint (CORE_ADDR
, int, int,
117 struct expression
*);
119 static int debug_to_remove_watchpoint (CORE_ADDR
, int, int,
120 struct expression
*);
122 static int debug_to_stopped_by_watchpoint (void);
124 static int debug_to_stopped_data_address (struct target_ops
*, CORE_ADDR
*);
126 static int debug_to_watchpoint_addr_within_range (struct target_ops
*,
127 CORE_ADDR
, CORE_ADDR
, int);
129 static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR
, int);
131 static int debug_to_can_accel_watchpoint_condition (CORE_ADDR
, int, int,
132 struct expression
*);
134 static void debug_to_terminal_init (void);
136 static void debug_to_terminal_inferior (void);
138 static void debug_to_terminal_ours_for_output (void);
140 static void debug_to_terminal_save_ours (void);
142 static void debug_to_terminal_ours (void);
144 static void debug_to_terminal_info (char *, int);
146 static void debug_to_load (char *, int);
148 static int debug_to_can_run (void);
150 static void debug_to_stop (ptid_t
);
152 /* Pointer to array of target architecture structures; the size of the
153 array; the current index into the array; the allocated size of the
155 struct target_ops
**target_structs
;
156 unsigned target_struct_size
;
157 unsigned target_struct_index
;
158 unsigned target_struct_allocsize
;
159 #define DEFAULT_ALLOCSIZE 10
161 /* The initial current target, so that there is always a semi-valid
164 static struct target_ops dummy_target
;
166 /* Top of target stack. */
168 static struct target_ops
*target_stack
;
170 /* The target structure we are currently using to talk to a process
171 or file or whatever "inferior" we have. */
173 struct target_ops current_target
;
175 /* Command list for target. */
177 static struct cmd_list_element
*targetlist
= NULL
;
179 /* Nonzero if we should trust readonly sections from the
180 executable when reading memory. */
182 static int trust_readonly
= 0;
184 /* Nonzero if we should show true memory content including
185 memory breakpoint inserted by gdb. */
187 static int show_memory_breakpoints
= 0;
189 /* These globals control whether GDB attempts to perform these
190 operations; they are useful for targets that need to prevent
191 inadvertant disruption, such as in non-stop mode. */
193 int may_write_registers
= 1;
195 int may_write_memory
= 1;
197 int may_insert_breakpoints
= 1;
199 int may_insert_tracepoints
= 1;
201 int may_insert_fast_tracepoints
= 1;
205 /* Non-zero if we want to see trace of target level stuff. */
207 static int targetdebug
= 0;
209 show_targetdebug (struct ui_file
*file
, int from_tty
,
210 struct cmd_list_element
*c
, const char *value
)
212 fprintf_filtered (file
, _("Target debugging is %s.\n"), value
);
215 static void setup_target_debug (void);
217 /* The option sets this. */
218 static int stack_cache_enabled_p_1
= 1;
219 /* And set_stack_cache_enabled_p updates this.
220 The reason for the separation is so that we don't flush the cache for
221 on->on transitions. */
222 static int stack_cache_enabled_p
= 1;
224 /* This is called *after* the stack-cache has been set.
225 Flush the cache for off->on and on->off transitions.
226 There's no real need to flush the cache for on->off transitions,
227 except cleanliness. */
230 set_stack_cache_enabled_p (char *args
, int from_tty
,
231 struct cmd_list_element
*c
)
233 if (stack_cache_enabled_p
!= stack_cache_enabled_p_1
)
234 target_dcache_invalidate ();
236 stack_cache_enabled_p
= stack_cache_enabled_p_1
;
240 show_stack_cache_enabled_p (struct ui_file
*file
, int from_tty
,
241 struct cmd_list_element
*c
, const char *value
)
243 fprintf_filtered (file
, _("Cache use for stack accesses is %s.\n"), value
);
246 /* Cache of memory operations, to speed up remote access. */
247 static DCACHE
*target_dcache
;
249 /* Invalidate the target dcache. */
252 target_dcache_invalidate (void)
254 dcache_invalidate (target_dcache
);
257 /* The user just typed 'target' without the name of a target. */
260 target_command (char *arg
, int from_tty
)
262 fputs_filtered ("Argument required (target name). Try `help target'\n",
266 /* Default target_has_* methods for process_stratum targets. */
269 default_child_has_all_memory (struct target_ops
*ops
)
271 /* If no inferior selected, then we can't read memory here. */
272 if (ptid_equal (inferior_ptid
, null_ptid
))
279 default_child_has_memory (struct target_ops
*ops
)
281 /* If no inferior selected, then we can't read memory here. */
282 if (ptid_equal (inferior_ptid
, null_ptid
))
289 default_child_has_stack (struct target_ops
*ops
)
291 /* If no inferior selected, there's no stack. */
292 if (ptid_equal (inferior_ptid
, null_ptid
))
299 default_child_has_registers (struct target_ops
*ops
)
301 /* Can't read registers from no inferior. */
302 if (ptid_equal (inferior_ptid
, null_ptid
))
309 default_child_has_execution (struct target_ops
*ops
, ptid_t the_ptid
)
311 /* If there's no thread selected, then we can't make it run through
313 if (ptid_equal (the_ptid
, null_ptid
))
321 target_has_all_memory_1 (void)
323 struct target_ops
*t
;
325 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
326 if (t
->to_has_all_memory (t
))
333 target_has_memory_1 (void)
335 struct target_ops
*t
;
337 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
338 if (t
->to_has_memory (t
))
345 target_has_stack_1 (void)
347 struct target_ops
*t
;
349 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
350 if (t
->to_has_stack (t
))
357 target_has_registers_1 (void)
359 struct target_ops
*t
;
361 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
362 if (t
->to_has_registers (t
))
369 target_has_execution_1 (ptid_t the_ptid
)
371 struct target_ops
*t
;
373 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
374 if (t
->to_has_execution (t
, the_ptid
))
381 target_has_execution_current (void)
383 return target_has_execution_1 (inferior_ptid
);
386 /* Add a possible target architecture to the list. */
389 add_target (struct target_ops
*t
)
391 /* Provide default values for all "must have" methods. */
392 if (t
->to_xfer_partial
== NULL
)
393 t
->to_xfer_partial
= default_xfer_partial
;
395 if (t
->to_has_all_memory
== NULL
)
396 t
->to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
398 if (t
->to_has_memory
== NULL
)
399 t
->to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
401 if (t
->to_has_stack
== NULL
)
402 t
->to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
404 if (t
->to_has_registers
== NULL
)
405 t
->to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
407 if (t
->to_has_execution
== NULL
)
408 t
->to_has_execution
= (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
412 target_struct_allocsize
= DEFAULT_ALLOCSIZE
;
413 target_structs
= (struct target_ops
**) xmalloc
414 (target_struct_allocsize
* sizeof (*target_structs
));
416 if (target_struct_size
>= target_struct_allocsize
)
418 target_struct_allocsize
*= 2;
419 target_structs
= (struct target_ops
**)
420 xrealloc ((char *) target_structs
,
421 target_struct_allocsize
* sizeof (*target_structs
));
423 target_structs
[target_struct_size
++] = t
;
425 if (targetlist
== NULL
)
426 add_prefix_cmd ("target", class_run
, target_command
, _("\
427 Connect to a target machine or process.\n\
428 The first argument is the type or protocol of the target machine.\n\
429 Remaining arguments are interpreted by the target protocol. For more\n\
430 information on the arguments for a particular protocol, type\n\
431 `help target ' followed by the protocol name."),
432 &targetlist
, "target ", 0, &cmdlist
);
433 add_cmd (t
->to_shortname
, no_class
, t
->to_open
, t
->to_doc
, &targetlist
);
446 struct target_ops
*t
;
448 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
449 if (t
->to_kill
!= NULL
)
452 fprintf_unfiltered (gdb_stdlog
, "target_kill ()\n");
462 target_load (char *arg
, int from_tty
)
464 target_dcache_invalidate ();
465 (*current_target
.to_load
) (arg
, from_tty
);
469 target_create_inferior (char *exec_file
, char *args
,
470 char **env
, int from_tty
)
472 struct target_ops
*t
;
474 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
476 if (t
->to_create_inferior
!= NULL
)
478 t
->to_create_inferior (t
, exec_file
, args
, env
, from_tty
);
480 fprintf_unfiltered (gdb_stdlog
,
481 "target_create_inferior (%s, %s, xxx, %d)\n",
482 exec_file
, args
, from_tty
);
487 internal_error (__FILE__
, __LINE__
,
488 _("could not find a target to create inferior"));
492 target_terminal_inferior (void)
494 /* A background resume (``run&'') should leave GDB in control of the
495 terminal. Use target_can_async_p, not target_is_async_p, since at
496 this point the target is not async yet. However, if sync_execution
497 is not set, we know it will become async prior to resume. */
498 if (target_can_async_p () && !sync_execution
)
501 /* If GDB is resuming the inferior in the foreground, install
502 inferior's terminal modes. */
503 (*current_target
.to_terminal_inferior
) ();
507 nomemory (CORE_ADDR memaddr
, char *myaddr
, int len
, int write
,
508 struct target_ops
*t
)
510 errno
= EIO
; /* Can't read/write this location. */
511 return 0; /* No bytes handled. */
517 error (_("You can't do that when your target is `%s'"),
518 current_target
.to_shortname
);
524 error (_("You can't do that without a process to debug."));
528 default_terminal_info (char *args
, int from_tty
)
530 printf_unfiltered (_("No saved terminal information.\n"));
533 /* A default implementation for the to_get_ada_task_ptid target method.
535 This function builds the PTID by using both LWP and TID as part of
536 the PTID lwp and tid elements. The pid used is the pid of the
540 default_get_ada_task_ptid (long lwp
, long tid
)
542 return ptid_build (ptid_get_pid (inferior_ptid
), lwp
, tid
);
545 static enum exec_direction_kind
546 default_execution_direction (void)
548 if (!target_can_execute_reverse
)
550 else if (!target_can_async_p ())
553 gdb_assert_not_reached ("\
554 to_execution_direction must be implemented for reverse async");
557 /* Go through the target stack from top to bottom, copying over zero
558 entries in current_target, then filling in still empty entries. In
559 effect, we are doing class inheritance through the pushed target
562 NOTE: cagney/2003-10-17: The problem with this inheritance, as it
563 is currently implemented, is that it discards any knowledge of
564 which target an inherited method originally belonged to.
565 Consequently, new new target methods should instead explicitly and
566 locally search the target stack for the target that can handle the
570 update_current_target (void)
572 struct target_ops
*t
;
574 /* First, reset current's contents. */
575 memset (¤t_target
, 0, sizeof (current_target
));
577 #define INHERIT(FIELD, TARGET) \
578 if (!current_target.FIELD) \
579 current_target.FIELD = (TARGET)->FIELD
581 for (t
= target_stack
; t
; t
= t
->beneath
)
583 INHERIT (to_shortname
, t
);
584 INHERIT (to_longname
, t
);
586 /* Do not inherit to_open. */
587 /* Do not inherit to_close. */
588 /* Do not inherit to_attach. */
589 INHERIT (to_post_attach
, t
);
590 INHERIT (to_attach_no_wait
, t
);
591 /* Do not inherit to_detach. */
592 /* Do not inherit to_disconnect. */
593 /* Do not inherit to_resume. */
594 /* Do not inherit to_wait. */
595 /* Do not inherit to_fetch_registers. */
596 /* Do not inherit to_store_registers. */
597 INHERIT (to_prepare_to_store
, t
);
598 INHERIT (deprecated_xfer_memory
, t
);
599 INHERIT (to_files_info
, t
);
600 INHERIT (to_insert_breakpoint
, t
);
601 INHERIT (to_remove_breakpoint
, t
);
602 INHERIT (to_can_use_hw_breakpoint
, t
);
603 INHERIT (to_insert_hw_breakpoint
, t
);
604 INHERIT (to_remove_hw_breakpoint
, t
);
605 /* Do not inherit to_ranged_break_num_registers. */
606 INHERIT (to_insert_watchpoint
, t
);
607 INHERIT (to_remove_watchpoint
, t
);
608 /* Do not inherit to_insert_mask_watchpoint. */
609 /* Do not inherit to_remove_mask_watchpoint. */
610 INHERIT (to_stopped_data_address
, t
);
611 INHERIT (to_have_steppable_watchpoint
, t
);
612 INHERIT (to_have_continuable_watchpoint
, t
);
613 INHERIT (to_stopped_by_watchpoint
, t
);
614 INHERIT (to_watchpoint_addr_within_range
, t
);
615 INHERIT (to_region_ok_for_hw_watchpoint
, t
);
616 INHERIT (to_can_accel_watchpoint_condition
, t
);
617 /* Do not inherit to_masked_watch_num_registers. */
618 INHERIT (to_terminal_init
, t
);
619 INHERIT (to_terminal_inferior
, t
);
620 INHERIT (to_terminal_ours_for_output
, t
);
621 INHERIT (to_terminal_ours
, t
);
622 INHERIT (to_terminal_save_ours
, t
);
623 INHERIT (to_terminal_info
, t
);
624 /* Do not inherit to_kill. */
625 INHERIT (to_load
, t
);
626 /* Do no inherit to_create_inferior. */
627 INHERIT (to_post_startup_inferior
, t
);
628 INHERIT (to_insert_fork_catchpoint
, t
);
629 INHERIT (to_remove_fork_catchpoint
, t
);
630 INHERIT (to_insert_vfork_catchpoint
, t
);
631 INHERIT (to_remove_vfork_catchpoint
, t
);
632 /* Do not inherit to_follow_fork. */
633 INHERIT (to_insert_exec_catchpoint
, t
);
634 INHERIT (to_remove_exec_catchpoint
, t
);
635 INHERIT (to_set_syscall_catchpoint
, t
);
636 INHERIT (to_has_exited
, t
);
637 /* Do not inherit to_mourn_inferior. */
638 INHERIT (to_can_run
, t
);
639 /* Do not inherit to_pass_signals. */
640 /* Do not inherit to_thread_alive. */
641 /* Do not inherit to_find_new_threads. */
642 /* Do not inherit to_pid_to_str. */
643 INHERIT (to_extra_thread_info
, t
);
644 INHERIT (to_thread_name
, t
);
645 INHERIT (to_stop
, t
);
646 /* Do not inherit to_xfer_partial. */
647 INHERIT (to_rcmd
, t
);
648 INHERIT (to_pid_to_exec_file
, t
);
649 INHERIT (to_log_command
, t
);
650 INHERIT (to_stratum
, t
);
651 /* Do not inherit to_has_all_memory. */
652 /* Do not inherit to_has_memory. */
653 /* Do not inherit to_has_stack. */
654 /* Do not inherit to_has_registers. */
655 /* Do not inherit to_has_execution. */
656 INHERIT (to_has_thread_control
, t
);
657 INHERIT (to_can_async_p
, t
);
658 INHERIT (to_is_async_p
, t
);
659 INHERIT (to_async
, t
);
660 INHERIT (to_find_memory_regions
, t
);
661 INHERIT (to_make_corefile_notes
, t
);
662 INHERIT (to_get_bookmark
, t
);
663 INHERIT (to_goto_bookmark
, t
);
664 /* Do not inherit to_get_thread_local_address. */
665 INHERIT (to_can_execute_reverse
, t
);
666 INHERIT (to_execution_direction
, t
);
667 INHERIT (to_thread_architecture
, t
);
668 /* Do not inherit to_read_description. */
669 INHERIT (to_get_ada_task_ptid
, t
);
670 /* Do not inherit to_search_memory. */
671 INHERIT (to_supports_multi_process
, t
);
672 INHERIT (to_supports_enable_disable_tracepoint
, t
);
673 INHERIT (to_supports_string_tracing
, t
);
674 INHERIT (to_trace_init
, t
);
675 INHERIT (to_download_tracepoint
, t
);
676 INHERIT (to_can_download_tracepoint
, t
);
677 INHERIT (to_download_trace_state_variable
, t
);
678 INHERIT (to_enable_tracepoint
, t
);
679 INHERIT (to_disable_tracepoint
, t
);
680 INHERIT (to_trace_set_readonly_regions
, t
);
681 INHERIT (to_trace_start
, t
);
682 INHERIT (to_get_trace_status
, t
);
683 INHERIT (to_get_tracepoint_status
, t
);
684 INHERIT (to_trace_stop
, t
);
685 INHERIT (to_trace_find
, t
);
686 INHERIT (to_get_trace_state_variable_value
, t
);
687 INHERIT (to_save_trace_data
, t
);
688 INHERIT (to_upload_tracepoints
, t
);
689 INHERIT (to_upload_trace_state_variables
, t
);
690 INHERIT (to_get_raw_trace_data
, t
);
691 INHERIT (to_get_min_fast_tracepoint_insn_len
, t
);
692 INHERIT (to_set_disconnected_tracing
, t
);
693 INHERIT (to_set_circular_trace_buffer
, t
);
694 INHERIT (to_set_trace_notes
, t
);
695 INHERIT (to_get_tib_address
, t
);
696 INHERIT (to_set_permissions
, t
);
697 INHERIT (to_static_tracepoint_marker_at
, t
);
698 INHERIT (to_static_tracepoint_markers_by_strid
, t
);
699 INHERIT (to_traceframe_info
, t
);
700 INHERIT (to_magic
, t
);
701 /* Do not inherit to_memory_map. */
702 /* Do not inherit to_flash_erase. */
703 /* Do not inherit to_flash_done. */
707 /* Clean up a target struct so it no longer has any zero pointers in
708 it. Some entries are defaulted to a method that print an error,
709 others are hard-wired to a standard recursive default. */
711 #define de_fault(field, value) \
712 if (!current_target.field) \
713 current_target.field = value
716 (void (*) (char *, int))
721 de_fault (to_post_attach
,
724 de_fault (to_prepare_to_store
,
725 (void (*) (struct regcache
*))
727 de_fault (deprecated_xfer_memory
,
728 (int (*) (CORE_ADDR
, gdb_byte
*, int, int,
729 struct mem_attrib
*, struct target_ops
*))
731 de_fault (to_files_info
,
732 (void (*) (struct target_ops
*))
734 de_fault (to_insert_breakpoint
,
735 memory_insert_breakpoint
);
736 de_fault (to_remove_breakpoint
,
737 memory_remove_breakpoint
);
738 de_fault (to_can_use_hw_breakpoint
,
739 (int (*) (int, int, int))
741 de_fault (to_insert_hw_breakpoint
,
742 (int (*) (struct gdbarch
*, struct bp_target_info
*))
744 de_fault (to_remove_hw_breakpoint
,
745 (int (*) (struct gdbarch
*, struct bp_target_info
*))
747 de_fault (to_insert_watchpoint
,
748 (int (*) (CORE_ADDR
, int, int, struct expression
*))
750 de_fault (to_remove_watchpoint
,
751 (int (*) (CORE_ADDR
, int, int, struct expression
*))
753 de_fault (to_stopped_by_watchpoint
,
756 de_fault (to_stopped_data_address
,
757 (int (*) (struct target_ops
*, CORE_ADDR
*))
759 de_fault (to_watchpoint_addr_within_range
,
760 default_watchpoint_addr_within_range
);
761 de_fault (to_region_ok_for_hw_watchpoint
,
762 default_region_ok_for_hw_watchpoint
);
763 de_fault (to_can_accel_watchpoint_condition
,
764 (int (*) (CORE_ADDR
, int, int, struct expression
*))
766 de_fault (to_terminal_init
,
769 de_fault (to_terminal_inferior
,
772 de_fault (to_terminal_ours_for_output
,
775 de_fault (to_terminal_ours
,
778 de_fault (to_terminal_save_ours
,
781 de_fault (to_terminal_info
,
782 default_terminal_info
);
784 (void (*) (char *, int))
786 de_fault (to_post_startup_inferior
,
789 de_fault (to_insert_fork_catchpoint
,
792 de_fault (to_remove_fork_catchpoint
,
795 de_fault (to_insert_vfork_catchpoint
,
798 de_fault (to_remove_vfork_catchpoint
,
801 de_fault (to_insert_exec_catchpoint
,
804 de_fault (to_remove_exec_catchpoint
,
807 de_fault (to_set_syscall_catchpoint
,
808 (int (*) (int, int, int, int, int *))
810 de_fault (to_has_exited
,
811 (int (*) (int, int, int *))
813 de_fault (to_can_run
,
815 de_fault (to_extra_thread_info
,
816 (char *(*) (struct thread_info
*))
818 de_fault (to_thread_name
,
819 (char *(*) (struct thread_info
*))
824 current_target
.to_xfer_partial
= current_xfer_partial
;
826 (void (*) (char *, struct ui_file
*))
828 de_fault (to_pid_to_exec_file
,
832 (void (*) (void (*) (enum inferior_event_type
, void*), void*))
834 de_fault (to_thread_architecture
,
835 default_thread_architecture
);
836 current_target
.to_read_description
= NULL
;
837 de_fault (to_get_ada_task_ptid
,
838 (ptid_t (*) (long, long))
839 default_get_ada_task_ptid
);
840 de_fault (to_supports_multi_process
,
843 de_fault (to_supports_enable_disable_tracepoint
,
846 de_fault (to_supports_string_tracing
,
849 de_fault (to_trace_init
,
852 de_fault (to_download_tracepoint
,
853 (void (*) (struct bp_location
*))
855 de_fault (to_can_download_tracepoint
,
858 de_fault (to_download_trace_state_variable
,
859 (void (*) (struct trace_state_variable
*))
861 de_fault (to_enable_tracepoint
,
862 (void (*) (struct bp_location
*))
864 de_fault (to_disable_tracepoint
,
865 (void (*) (struct bp_location
*))
867 de_fault (to_trace_set_readonly_regions
,
870 de_fault (to_trace_start
,
873 de_fault (to_get_trace_status
,
874 (int (*) (struct trace_status
*))
876 de_fault (to_get_tracepoint_status
,
877 (void (*) (struct breakpoint
*, struct uploaded_tp
*))
879 de_fault (to_trace_stop
,
882 de_fault (to_trace_find
,
883 (int (*) (enum trace_find_type
, int, ULONGEST
, ULONGEST
, int *))
885 de_fault (to_get_trace_state_variable_value
,
886 (int (*) (int, LONGEST
*))
888 de_fault (to_save_trace_data
,
889 (int (*) (const char *))
891 de_fault (to_upload_tracepoints
,
892 (int (*) (struct uploaded_tp
**))
894 de_fault (to_upload_trace_state_variables
,
895 (int (*) (struct uploaded_tsv
**))
897 de_fault (to_get_raw_trace_data
,
898 (LONGEST (*) (gdb_byte
*, ULONGEST
, LONGEST
))
900 de_fault (to_get_min_fast_tracepoint_insn_len
,
903 de_fault (to_set_disconnected_tracing
,
906 de_fault (to_set_circular_trace_buffer
,
909 de_fault (to_set_trace_notes
,
910 (int (*) (char *, char *, char *))
912 de_fault (to_get_tib_address
,
913 (int (*) (ptid_t
, CORE_ADDR
*))
915 de_fault (to_set_permissions
,
918 de_fault (to_static_tracepoint_marker_at
,
919 (int (*) (CORE_ADDR
, struct static_tracepoint_marker
*))
921 de_fault (to_static_tracepoint_markers_by_strid
,
922 (VEC(static_tracepoint_marker_p
) * (*) (const char *))
924 de_fault (to_traceframe_info
,
925 (struct traceframe_info
* (*) (void))
927 de_fault (to_execution_direction
, default_execution_direction
);
931 /* Finally, position the target-stack beneath the squashed
932 "current_target". That way code looking for a non-inherited
933 target method can quickly and simply find it. */
934 current_target
.beneath
= target_stack
;
937 setup_target_debug ();
940 /* Push a new target type into the stack of the existing target accessors,
941 possibly superseding some of the existing accessors.
943 Rather than allow an empty stack, we always have the dummy target at
944 the bottom stratum, so we can call the function vectors without
948 push_target (struct target_ops
*t
)
950 struct target_ops
**cur
;
952 /* Check magic number. If wrong, it probably means someone changed
953 the struct definition, but not all the places that initialize one. */
954 if (t
->to_magic
!= OPS_MAGIC
)
956 fprintf_unfiltered (gdb_stderr
,
957 "Magic number of %s target struct wrong\n",
959 internal_error (__FILE__
, __LINE__
,
960 _("failed internal consistency check"));
963 /* Find the proper stratum to install this target in. */
964 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
966 if ((int) (t
->to_stratum
) >= (int) (*cur
)->to_stratum
)
970 /* If there's already targets at this stratum, remove them. */
971 /* FIXME: cagney/2003-10-15: I think this should be popping all
972 targets to CUR, and not just those at this stratum level. */
973 while ((*cur
) != NULL
&& t
->to_stratum
== (*cur
)->to_stratum
)
975 /* There's already something at this stratum level. Close it,
976 and un-hook it from the stack. */
977 struct target_ops
*tmp
= (*cur
);
979 (*cur
) = (*cur
)->beneath
;
981 target_close (tmp
, 0);
984 /* We have removed all targets in our stratum, now add the new one. */
988 update_current_target ();
991 /* Remove a target_ops vector from the stack, wherever it may be.
992 Return how many times it was removed (0 or 1). */
995 unpush_target (struct target_ops
*t
)
997 struct target_ops
**cur
;
998 struct target_ops
*tmp
;
1000 if (t
->to_stratum
== dummy_stratum
)
1001 internal_error (__FILE__
, __LINE__
,
1002 _("Attempt to unpush the dummy target"));
1004 /* Look for the specified target. Note that we assume that a target
1005 can only occur once in the target stack. */
1007 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1014 return 0; /* Didn't find target_ops, quit now. */
1016 /* NOTE: cagney/2003-12-06: In '94 the close call was made
1017 unconditional by moving it to before the above check that the
1018 target was in the target stack (something about "Change the way
1019 pushing and popping of targets work to support target overlays
1020 and inheritance"). This doesn't make much sense - only open
1021 targets should be closed. */
1022 target_close (t
, 0);
1024 /* Unchain the target. */
1026 (*cur
) = (*cur
)->beneath
;
1027 tmp
->beneath
= NULL
;
1029 update_current_target ();
1037 target_close (target_stack
, 0); /* Let it clean up. */
1038 if (unpush_target (target_stack
) == 1)
1041 fprintf_unfiltered (gdb_stderr
,
1042 "pop_target couldn't find target %s\n",
1043 current_target
.to_shortname
);
1044 internal_error (__FILE__
, __LINE__
,
1045 _("failed internal consistency check"));
1049 pop_all_targets_above (enum strata above_stratum
, int quitting
)
1051 while ((int) (current_target
.to_stratum
) > (int) above_stratum
)
1053 target_close (target_stack
, quitting
);
1054 if (!unpush_target (target_stack
))
1056 fprintf_unfiltered (gdb_stderr
,
1057 "pop_all_targets couldn't find target %s\n",
1058 target_stack
->to_shortname
);
1059 internal_error (__FILE__
, __LINE__
,
1060 _("failed internal consistency check"));
1067 pop_all_targets (int quitting
)
1069 pop_all_targets_above (dummy_stratum
, quitting
);
1072 /* Return 1 if T is now pushed in the target stack. Return 0 otherwise. */
1075 target_is_pushed (struct target_ops
*t
)
1077 struct target_ops
**cur
;
1079 /* Check magic number. If wrong, it probably means someone changed
1080 the struct definition, but not all the places that initialize one. */
1081 if (t
->to_magic
!= OPS_MAGIC
)
1083 fprintf_unfiltered (gdb_stderr
,
1084 "Magic number of %s target struct wrong\n",
1086 internal_error (__FILE__
, __LINE__
,
1087 _("failed internal consistency check"));
1090 for (cur
= &target_stack
; (*cur
) != NULL
; cur
= &(*cur
)->beneath
)
1097 /* Using the objfile specified in OBJFILE, find the address for the
1098 current thread's thread-local storage with offset OFFSET. */
1100 target_translate_tls_address (struct objfile
*objfile
, CORE_ADDR offset
)
1102 volatile CORE_ADDR addr
= 0;
1103 struct target_ops
*target
;
1105 for (target
= current_target
.beneath
;
1107 target
= target
->beneath
)
1109 if (target
->to_get_thread_local_address
!= NULL
)
1114 && gdbarch_fetch_tls_load_module_address_p (target_gdbarch
))
1116 ptid_t ptid
= inferior_ptid
;
1117 volatile struct gdb_exception ex
;
1119 TRY_CATCH (ex
, RETURN_MASK_ALL
)
1123 /* Fetch the load module address for this objfile. */
1124 lm_addr
= gdbarch_fetch_tls_load_module_address (target_gdbarch
,
1126 /* If it's 0, throw the appropriate exception. */
1128 throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR
,
1129 _("TLS load module not found"));
1131 addr
= target
->to_get_thread_local_address (target
, ptid
,
1134 /* If an error occurred, print TLS related messages here. Otherwise,
1135 throw the error to some higher catcher. */
1138 int objfile_is_library
= (objfile
->flags
& OBJF_SHARED
);
1142 case TLS_NO_LIBRARY_SUPPORT_ERROR
:
1143 error (_("Cannot find thread-local variables "
1144 "in this thread library."));
1146 case TLS_LOAD_MODULE_NOT_FOUND_ERROR
:
1147 if (objfile_is_library
)
1148 error (_("Cannot find shared library `%s' in dynamic"
1149 " linker's load module list"), objfile
->name
);
1151 error (_("Cannot find executable file `%s' in dynamic"
1152 " linker's load module list"), objfile
->name
);
1154 case TLS_NOT_ALLOCATED_YET_ERROR
:
1155 if (objfile_is_library
)
1156 error (_("The inferior has not yet allocated storage for"
1157 " thread-local variables in\n"
1158 "the shared library `%s'\n"
1160 objfile
->name
, target_pid_to_str (ptid
));
1162 error (_("The inferior has not yet allocated storage for"
1163 " thread-local variables in\n"
1164 "the executable `%s'\n"
1166 objfile
->name
, target_pid_to_str (ptid
));
1168 case TLS_GENERIC_ERROR
:
1169 if (objfile_is_library
)
1170 error (_("Cannot find thread-local storage for %s, "
1171 "shared library %s:\n%s"),
1172 target_pid_to_str (ptid
),
1173 objfile
->name
, ex
.message
);
1175 error (_("Cannot find thread-local storage for %s, "
1176 "executable file %s:\n%s"),
1177 target_pid_to_str (ptid
),
1178 objfile
->name
, ex
.message
);
1181 throw_exception (ex
);
1186 /* It wouldn't be wrong here to try a gdbarch method, too; finding
1187 TLS is an ABI-specific thing. But we don't do that yet. */
1189 error (_("Cannot find thread-local variables on this target"));
1195 #define MIN(A, B) (((A) <= (B)) ? (A) : (B))
1197 /* target_read_string -- read a null terminated string, up to LEN bytes,
1198 from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful.
1199 Set *STRING to a pointer to malloc'd memory containing the data; the caller
1200 is responsible for freeing it. Return the number of bytes successfully
1204 target_read_string (CORE_ADDR memaddr
, char **string
, int len
, int *errnop
)
1206 int tlen
, origlen
, offset
, i
;
1210 int buffer_allocated
;
1212 unsigned int nbytes_read
= 0;
1214 gdb_assert (string
);
1216 /* Small for testing. */
1217 buffer_allocated
= 4;
1218 buffer
= xmalloc (buffer_allocated
);
1225 tlen
= MIN (len
, 4 - (memaddr
& 3));
1226 offset
= memaddr
& 3;
1228 errcode
= target_read_memory (memaddr
& ~3, buf
, sizeof buf
);
1231 /* The transfer request might have crossed the boundary to an
1232 unallocated region of memory. Retry the transfer, requesting
1236 errcode
= target_read_memory (memaddr
, buf
, 1);
1241 if (bufptr
- buffer
+ tlen
> buffer_allocated
)
1245 bytes
= bufptr
- buffer
;
1246 buffer_allocated
*= 2;
1247 buffer
= xrealloc (buffer
, buffer_allocated
);
1248 bufptr
= buffer
+ bytes
;
1251 for (i
= 0; i
< tlen
; i
++)
1253 *bufptr
++ = buf
[i
+ offset
];
1254 if (buf
[i
+ offset
] == '\000')
1256 nbytes_read
+= i
+ 1;
1263 nbytes_read
+= tlen
;
1272 struct target_section_table
*
1273 target_get_section_table (struct target_ops
*target
)
1275 struct target_ops
*t
;
1278 fprintf_unfiltered (gdb_stdlog
, "target_get_section_table ()\n");
1280 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
1281 if (t
->to_get_section_table
!= NULL
)
1282 return (*t
->to_get_section_table
) (t
);
1287 /* Find a section containing ADDR. */
1289 struct target_section
*
1290 target_section_by_addr (struct target_ops
*target
, CORE_ADDR addr
)
1292 struct target_section_table
*table
= target_get_section_table (target
);
1293 struct target_section
*secp
;
1298 for (secp
= table
->sections
; secp
< table
->sections_end
; secp
++)
1300 if (addr
>= secp
->addr
&& addr
< secp
->endaddr
)
1306 /* Read memory from the live target, even if currently inspecting a
1307 traceframe. The return is the same as that of target_read. */
1310 target_read_live_memory (enum target_object object
,
1311 ULONGEST memaddr
, gdb_byte
*myaddr
, LONGEST len
)
1314 struct cleanup
*cleanup
;
1316 /* Switch momentarily out of tfind mode so to access live memory.
1317 Note that this must not clear global state, such as the frame
1318 cache, which must still remain valid for the previous traceframe.
1319 We may be _building_ the frame cache at this point. */
1320 cleanup
= make_cleanup_restore_traceframe_number ();
1321 set_traceframe_number (-1);
1323 ret
= target_read (current_target
.beneath
, object
, NULL
,
1324 myaddr
, memaddr
, len
);
1326 do_cleanups (cleanup
);
1330 /* Using the set of read-only target sections of OPS, read live
1331 read-only memory. Note that the actual reads start from the
1332 top-most target again.
1334 For interface/parameters/return description see target.h,
1338 memory_xfer_live_readonly_partial (struct target_ops
*ops
,
1339 enum target_object object
,
1340 gdb_byte
*readbuf
, ULONGEST memaddr
,
1343 struct target_section
*secp
;
1344 struct target_section_table
*table
;
1346 secp
= target_section_by_addr (ops
, memaddr
);
1348 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1351 struct target_section
*p
;
1352 ULONGEST memend
= memaddr
+ len
;
1354 table
= target_get_section_table (ops
);
1356 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
1358 if (memaddr
>= p
->addr
)
1360 if (memend
<= p
->endaddr
)
1362 /* Entire transfer is within this section. */
1363 return target_read_live_memory (object
, memaddr
,
1366 else if (memaddr
>= p
->endaddr
)
1368 /* This section ends before the transfer starts. */
1373 /* This section overlaps the transfer. Just do half. */
1374 len
= p
->endaddr
- memaddr
;
1375 return target_read_live_memory (object
, memaddr
,
1385 /* Perform a partial memory transfer.
1386 For docs see target.h, to_xfer_partial. */
1389 memory_xfer_partial_1 (struct target_ops
*ops
, enum target_object object
,
1390 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1395 struct mem_region
*region
;
1396 struct inferior
*inf
;
1398 /* For accesses to unmapped overlay sections, read directly from
1399 files. Must do this first, as MEMADDR may need adjustment. */
1400 if (readbuf
!= NULL
&& overlay_debugging
)
1402 struct obj_section
*section
= find_pc_overlay (memaddr
);
1404 if (pc_in_unmapped_range (memaddr
, section
))
1406 struct target_section_table
*table
1407 = target_get_section_table (ops
);
1408 const char *section_name
= section
->the_bfd_section
->name
;
1410 memaddr
= overlay_mapped_address (memaddr
, section
);
1411 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1414 table
->sections_end
,
1419 /* Try the executable files, if "trust-readonly-sections" is set. */
1420 if (readbuf
!= NULL
&& trust_readonly
)
1422 struct target_section
*secp
;
1423 struct target_section_table
*table
;
1425 secp
= target_section_by_addr (ops
, memaddr
);
1427 && (bfd_get_section_flags (secp
->bfd
, secp
->the_bfd_section
)
1430 table
= target_get_section_table (ops
);
1431 return section_table_xfer_memory_partial (readbuf
, writebuf
,
1434 table
->sections_end
,
1439 /* If reading unavailable memory in the context of traceframes, and
1440 this address falls within a read-only section, fallback to
1441 reading from live memory. */
1442 if (readbuf
!= NULL
&& get_traceframe_number () != -1)
1444 VEC(mem_range_s
) *available
;
1446 /* If we fail to get the set of available memory, then the
1447 target does not support querying traceframe info, and so we
1448 attempt reading from the traceframe anyway (assuming the
1449 target implements the old QTro packet then). */
1450 if (traceframe_available_memory (&available
, memaddr
, len
))
1452 struct cleanup
*old_chain
;
1454 old_chain
= make_cleanup (VEC_cleanup(mem_range_s
), &available
);
1456 if (VEC_empty (mem_range_s
, available
)
1457 || VEC_index (mem_range_s
, available
, 0)->start
!= memaddr
)
1459 /* Don't read into the traceframe's available
1461 if (!VEC_empty (mem_range_s
, available
))
1463 LONGEST oldlen
= len
;
1465 len
= VEC_index (mem_range_s
, available
, 0)->start
- memaddr
;
1466 gdb_assert (len
<= oldlen
);
1469 do_cleanups (old_chain
);
1471 /* This goes through the topmost target again. */
1472 res
= memory_xfer_live_readonly_partial (ops
, object
,
1473 readbuf
, memaddr
, len
);
1477 /* No use trying further, we know some memory starting
1478 at MEMADDR isn't available. */
1482 /* Don't try to read more than how much is available, in
1483 case the target implements the deprecated QTro packet to
1484 cater for older GDBs (the target's knowledge of read-only
1485 sections may be outdated by now). */
1486 len
= VEC_index (mem_range_s
, available
, 0)->length
;
1488 do_cleanups (old_chain
);
1492 /* Try GDB's internal data cache. */
1493 region
= lookup_mem_region (memaddr
);
1494 /* region->hi == 0 means there's no upper bound. */
1495 if (memaddr
+ len
< region
->hi
|| region
->hi
== 0)
1498 reg_len
= region
->hi
- memaddr
;
1500 switch (region
->attrib
.mode
)
1503 if (writebuf
!= NULL
)
1508 if (readbuf
!= NULL
)
1513 /* We only support writing to flash during "load" for now. */
1514 if (writebuf
!= NULL
)
1515 error (_("Writing to flash memory forbidden in this context"));
1522 if (!ptid_equal (inferior_ptid
, null_ptid
))
1523 inf
= find_inferior_pid (ptid_get_pid (inferior_ptid
));
1528 /* The dcache reads whole cache lines; that doesn't play well
1529 with reading from a trace buffer, because reading outside of
1530 the collected memory range fails. */
1531 && get_traceframe_number () == -1
1532 && (region
->attrib
.cache
1533 || (stack_cache_enabled_p
&& object
== TARGET_OBJECT_STACK_MEMORY
)))
1535 if (readbuf
!= NULL
)
1536 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
, readbuf
,
1539 /* FIXME drow/2006-08-09: If we're going to preserve const
1540 correctness dcache_xfer_memory should take readbuf and
1542 res
= dcache_xfer_memory (ops
, target_dcache
, memaddr
,
1551 /* If none of those methods found the memory we wanted, fall back
1552 to a target partial transfer. Normally a single call to
1553 to_xfer_partial is enough; if it doesn't recognize an object
1554 it will call the to_xfer_partial of the next target down.
1555 But for memory this won't do. Memory is the only target
1556 object which can be read from more than one valid target.
1557 A core file, for instance, could have some of memory but
1558 delegate other bits to the target below it. So, we must
1559 manually try all targets. */
1563 res
= ops
->to_xfer_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
1564 readbuf
, writebuf
, memaddr
, reg_len
);
1568 /* We want to continue past core files to executables, but not
1569 past a running target's memory. */
1570 if (ops
->to_has_all_memory (ops
))
1575 while (ops
!= NULL
);
1577 /* Make sure the cache gets updated no matter what - if we are writing
1578 to the stack. Even if this write is not tagged as such, we still need
1579 to update the cache. */
1584 && !region
->attrib
.cache
1585 && stack_cache_enabled_p
1586 && object
!= TARGET_OBJECT_STACK_MEMORY
)
1588 dcache_update (target_dcache
, memaddr
, (void *) writebuf
, res
);
1591 /* If we still haven't got anything, return the last error. We
1596 /* Perform a partial memory transfer. For docs see target.h,
1600 memory_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1601 void *readbuf
, const void *writebuf
, ULONGEST memaddr
,
1606 /* Zero length requests are ok and require no work. */
1610 /* Fill in READBUF with breakpoint shadows, or WRITEBUF with
1611 breakpoint insns, thus hiding out from higher layers whether
1612 there are software breakpoints inserted in the code stream. */
1613 if (readbuf
!= NULL
)
1615 res
= memory_xfer_partial_1 (ops
, object
, readbuf
, NULL
, memaddr
, len
);
1617 if (res
> 0 && !show_memory_breakpoints
)
1618 breakpoint_xfer_memory (readbuf
, NULL
, NULL
, memaddr
, res
);
1623 struct cleanup
*old_chain
;
1625 buf
= xmalloc (len
);
1626 old_chain
= make_cleanup (xfree
, buf
);
1627 memcpy (buf
, writebuf
, len
);
1629 breakpoint_xfer_memory (NULL
, buf
, writebuf
, memaddr
, len
);
1630 res
= memory_xfer_partial_1 (ops
, object
, NULL
, buf
, memaddr
, len
);
1632 do_cleanups (old_chain
);
1639 restore_show_memory_breakpoints (void *arg
)
1641 show_memory_breakpoints
= (uintptr_t) arg
;
1645 make_show_memory_breakpoints_cleanup (int show
)
1647 int current
= show_memory_breakpoints
;
1649 show_memory_breakpoints
= show
;
1650 return make_cleanup (restore_show_memory_breakpoints
,
1651 (void *) (uintptr_t) current
);
1654 /* For docs see target.h, to_xfer_partial. */
1657 target_xfer_partial (struct target_ops
*ops
,
1658 enum target_object object
, const char *annex
,
1659 void *readbuf
, const void *writebuf
,
1660 ULONGEST offset
, LONGEST len
)
1664 gdb_assert (ops
->to_xfer_partial
!= NULL
);
1666 if (writebuf
&& !may_write_memory
)
1667 error (_("Writing to memory is not allowed (addr %s, len %s)"),
1668 core_addr_to_string_nz (offset
), plongest (len
));
1670 /* If this is a memory transfer, let the memory-specific code
1671 have a look at it instead. Memory transfers are more
1673 if (object
== TARGET_OBJECT_MEMORY
|| object
== TARGET_OBJECT_STACK_MEMORY
)
1674 retval
= memory_xfer_partial (ops
, object
, readbuf
,
1675 writebuf
, offset
, len
);
1678 enum target_object raw_object
= object
;
1680 /* If this is a raw memory transfer, request the normal
1681 memory object from other layers. */
1682 if (raw_object
== TARGET_OBJECT_RAW_MEMORY
)
1683 raw_object
= TARGET_OBJECT_MEMORY
;
1685 retval
= ops
->to_xfer_partial (ops
, raw_object
, annex
, readbuf
,
1686 writebuf
, offset
, len
);
1691 const unsigned char *myaddr
= NULL
;
1693 fprintf_unfiltered (gdb_stdlog
,
1694 "%s:target_xfer_partial "
1695 "(%d, %s, %s, %s, %s, %s) = %s",
1698 (annex
? annex
: "(null)"),
1699 host_address_to_string (readbuf
),
1700 host_address_to_string (writebuf
),
1701 core_addr_to_string_nz (offset
),
1702 plongest (len
), plongest (retval
));
1708 if (retval
> 0 && myaddr
!= NULL
)
1712 fputs_unfiltered (", bytes =", gdb_stdlog
);
1713 for (i
= 0; i
< retval
; i
++)
1715 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
1717 if (targetdebug
< 2 && i
> 0)
1719 fprintf_unfiltered (gdb_stdlog
, " ...");
1722 fprintf_unfiltered (gdb_stdlog
, "\n");
1725 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
1729 fputc_unfiltered ('\n', gdb_stdlog
);
1734 /* Read LEN bytes of target memory at address MEMADDR, placing the results in
1735 GDB's memory at MYADDR. Returns either 0 for success or an errno value
1736 if any error occurs.
1738 If an error occurs, no guarantee is made about the contents of the data at
1739 MYADDR. In particular, the caller should not depend upon partial reads
1740 filling the buffer with good data. There is no way for the caller to know
1741 how much good data might have been transfered anyway. Callers that can
1742 deal with partial reads should call target_read (which will retry until
1743 it makes no progress, and then return how much was transferred). */
1746 target_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1748 /* Dispatch to the topmost target, not the flattened current_target.
1749 Memory accesses check target->to_has_(all_)memory, and the
1750 flattened target doesn't inherit those. */
1751 if (target_read (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1752 myaddr
, memaddr
, len
) == len
)
1758 /* Like target_read_memory, but specify explicitly that this is a read from
1759 the target's stack. This may trigger different cache behavior. */
1762 target_read_stack (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1764 /* Dispatch to the topmost target, not the flattened current_target.
1765 Memory accesses check target->to_has_(all_)memory, and the
1766 flattened target doesn't inherit those. */
1768 if (target_read (current_target
.beneath
, TARGET_OBJECT_STACK_MEMORY
, NULL
,
1769 myaddr
, memaddr
, len
) == len
)
1775 /* Write LEN bytes from MYADDR to target memory at address MEMADDR.
1776 Returns either 0 for success or an errno value if any error occurs.
1777 If an error occurs, no guarantee is made about how much data got written.
1778 Callers that can deal with partial writes should call target_write. */
1781 target_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1783 /* Dispatch to the topmost target, not the flattened current_target.
1784 Memory accesses check target->to_has_(all_)memory, and the
1785 flattened target doesn't inherit those. */
1786 if (target_write (current_target
.beneath
, TARGET_OBJECT_MEMORY
, NULL
,
1787 myaddr
, memaddr
, len
) == len
)
1793 /* Write LEN bytes from MYADDR to target raw memory at address
1794 MEMADDR. Returns either 0 for success or an errno value if any
1795 error occurs. If an error occurs, no guarantee is made about how
1796 much data got written. Callers that can deal with partial writes
1797 should call target_write. */
1800 target_write_raw_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1802 /* Dispatch to the topmost target, not the flattened current_target.
1803 Memory accesses check target->to_has_(all_)memory, and the
1804 flattened target doesn't inherit those. */
1805 if (target_write (current_target
.beneath
, TARGET_OBJECT_RAW_MEMORY
, NULL
,
1806 myaddr
, memaddr
, len
) == len
)
1812 /* Fetch the target's memory map. */
1815 target_memory_map (void)
1817 VEC(mem_region_s
) *result
;
1818 struct mem_region
*last_one
, *this_one
;
1820 struct target_ops
*t
;
1823 fprintf_unfiltered (gdb_stdlog
, "target_memory_map ()\n");
1825 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1826 if (t
->to_memory_map
!= NULL
)
1832 result
= t
->to_memory_map (t
);
1836 qsort (VEC_address (mem_region_s
, result
),
1837 VEC_length (mem_region_s
, result
),
1838 sizeof (struct mem_region
), mem_region_cmp
);
1840 /* Check that regions do not overlap. Simultaneously assign
1841 a numbering for the "mem" commands to use to refer to
1844 for (ix
= 0; VEC_iterate (mem_region_s
, result
, ix
, this_one
); ix
++)
1846 this_one
->number
= ix
;
1848 if (last_one
&& last_one
->hi
> this_one
->lo
)
1850 warning (_("Overlapping regions in memory map: ignoring"));
1851 VEC_free (mem_region_s
, result
);
1854 last_one
= this_one
;
1861 target_flash_erase (ULONGEST address
, LONGEST length
)
1863 struct target_ops
*t
;
1865 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1866 if (t
->to_flash_erase
!= NULL
)
1869 fprintf_unfiltered (gdb_stdlog
, "target_flash_erase (%s, %s)\n",
1870 hex_string (address
), phex (length
, 0));
1871 t
->to_flash_erase (t
, address
, length
);
1879 target_flash_done (void)
1881 struct target_ops
*t
;
1883 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
1884 if (t
->to_flash_done
!= NULL
)
1887 fprintf_unfiltered (gdb_stdlog
, "target_flash_done\n");
1888 t
->to_flash_done (t
);
1896 show_trust_readonly (struct ui_file
*file
, int from_tty
,
1897 struct cmd_list_element
*c
, const char *value
)
1899 fprintf_filtered (file
,
1900 _("Mode for reading from readonly sections is %s.\n"),
1904 /* More generic transfers. */
1907 default_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1908 const char *annex
, gdb_byte
*readbuf
,
1909 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1911 if (object
== TARGET_OBJECT_MEMORY
1912 && ops
->deprecated_xfer_memory
!= NULL
)
1913 /* If available, fall back to the target's
1914 "deprecated_xfer_memory" method. */
1919 if (writebuf
!= NULL
)
1921 void *buffer
= xmalloc (len
);
1922 struct cleanup
*cleanup
= make_cleanup (xfree
, buffer
);
1924 memcpy (buffer
, writebuf
, len
);
1925 xfered
= ops
->deprecated_xfer_memory (offset
, buffer
, len
,
1926 1/*write*/, NULL
, ops
);
1927 do_cleanups (cleanup
);
1929 if (readbuf
!= NULL
)
1930 xfered
= ops
->deprecated_xfer_memory (offset
, readbuf
, len
,
1931 0/*read*/, NULL
, ops
);
1934 else if (xfered
== 0 && errno
== 0)
1935 /* "deprecated_xfer_memory" uses 0, cross checked against
1936 ERRNO as one indication of an error. */
1941 else if (ops
->beneath
!= NULL
)
1942 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1943 readbuf
, writebuf
, offset
, len
);
1948 /* The xfer_partial handler for the topmost target. Unlike the default,
1949 it does not need to handle memory specially; it just passes all
1950 requests down the stack. */
1953 current_xfer_partial (struct target_ops
*ops
, enum target_object object
,
1954 const char *annex
, gdb_byte
*readbuf
,
1955 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
1957 if (ops
->beneath
!= NULL
)
1958 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
, annex
,
1959 readbuf
, writebuf
, offset
, len
);
1964 /* Target vector read/write partial wrapper functions. */
1967 target_read_partial (struct target_ops
*ops
,
1968 enum target_object object
,
1969 const char *annex
, gdb_byte
*buf
,
1970 ULONGEST offset
, LONGEST len
)
1972 return target_xfer_partial (ops
, object
, annex
, buf
, NULL
, offset
, len
);
1976 target_write_partial (struct target_ops
*ops
,
1977 enum target_object object
,
1978 const char *annex
, const gdb_byte
*buf
,
1979 ULONGEST offset
, LONGEST len
)
1981 return target_xfer_partial (ops
, object
, annex
, NULL
, buf
, offset
, len
);
1984 /* Wrappers to perform the full transfer. */
1986 /* For docs on target_read see target.h. */
1989 target_read (struct target_ops
*ops
,
1990 enum target_object object
,
1991 const char *annex
, gdb_byte
*buf
,
1992 ULONGEST offset
, LONGEST len
)
1996 while (xfered
< len
)
1998 LONGEST xfer
= target_read_partial (ops
, object
, annex
,
1999 (gdb_byte
*) buf
+ xfered
,
2000 offset
+ xfered
, len
- xfered
);
2002 /* Call an observer, notifying them of the xfer progress? */
2013 /* Assuming that the entire [begin, end) range of memory cannot be
2014 read, try to read whatever subrange is possible to read.
2016 The function returns, in RESULT, either zero or one memory block.
2017 If there's a readable subrange at the beginning, it is completely
2018 read and returned. Any further readable subrange will not be read.
2019 Otherwise, if there's a readable subrange at the end, it will be
2020 completely read and returned. Any readable subranges before it
2021 (obviously, not starting at the beginning), will be ignored. In
2022 other cases -- either no readable subrange, or readable subrange(s)
2023 that is neither at the beginning, or end, nothing is returned.
2025 The purpose of this function is to handle a read across a boundary
2026 of accessible memory in a case when memory map is not available.
2027 The above restrictions are fine for this case, but will give
2028 incorrect results if the memory is 'patchy'. However, supporting
2029 'patchy' memory would require trying to read every single byte,
2030 and it seems unacceptable solution. Explicit memory map is
2031 recommended for this case -- and target_read_memory_robust will
2032 take care of reading multiple ranges then. */
2035 read_whatever_is_readable (struct target_ops
*ops
,
2036 ULONGEST begin
, ULONGEST end
,
2037 VEC(memory_read_result_s
) **result
)
2039 gdb_byte
*buf
= xmalloc (end
- begin
);
2040 ULONGEST current_begin
= begin
;
2041 ULONGEST current_end
= end
;
2043 memory_read_result_s r
;
2045 /* If we previously failed to read 1 byte, nothing can be done here. */
2046 if (end
- begin
<= 1)
2052 /* Check that either first or the last byte is readable, and give up
2053 if not. This heuristic is meant to permit reading accessible memory
2054 at the boundary of accessible region. */
2055 if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2056 buf
, begin
, 1) == 1)
2061 else if (target_read_partial (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2062 buf
+ (end
-begin
) - 1, end
- 1, 1) == 1)
2073 /* Loop invariant is that the [current_begin, current_end) was previously
2074 found to be not readable as a whole.
2076 Note loop condition -- if the range has 1 byte, we can't divide the range
2077 so there's no point trying further. */
2078 while (current_end
- current_begin
> 1)
2080 ULONGEST first_half_begin
, first_half_end
;
2081 ULONGEST second_half_begin
, second_half_end
;
2083 ULONGEST middle
= current_begin
+ (current_end
- current_begin
)/2;
2087 first_half_begin
= current_begin
;
2088 first_half_end
= middle
;
2089 second_half_begin
= middle
;
2090 second_half_end
= current_end
;
2094 first_half_begin
= middle
;
2095 first_half_end
= current_end
;
2096 second_half_begin
= current_begin
;
2097 second_half_end
= middle
;
2100 xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2101 buf
+ (first_half_begin
- begin
),
2103 first_half_end
- first_half_begin
);
2105 if (xfer
== first_half_end
- first_half_begin
)
2107 /* This half reads up fine. So, the error must be in the
2109 current_begin
= second_half_begin
;
2110 current_end
= second_half_end
;
2114 /* This half is not readable. Because we've tried one byte, we
2115 know some part of this half if actually redable. Go to the next
2116 iteration to divide again and try to read.
2118 We don't handle the other half, because this function only tries
2119 to read a single readable subrange. */
2120 current_begin
= first_half_begin
;
2121 current_end
= first_half_end
;
2127 /* The [begin, current_begin) range has been read. */
2129 r
.end
= current_begin
;
2134 /* The [current_end, end) range has been read. */
2135 LONGEST rlen
= end
- current_end
;
2137 r
.data
= xmalloc (rlen
);
2138 memcpy (r
.data
, buf
+ current_end
- begin
, rlen
);
2139 r
.begin
= current_end
;
2143 VEC_safe_push(memory_read_result_s
, (*result
), &r
);
2147 free_memory_read_result_vector (void *x
)
2149 VEC(memory_read_result_s
) *v
= x
;
2150 memory_read_result_s
*current
;
2153 for (ix
= 0; VEC_iterate (memory_read_result_s
, v
, ix
, current
); ++ix
)
2155 xfree (current
->data
);
2157 VEC_free (memory_read_result_s
, v
);
2160 VEC(memory_read_result_s
) *
2161 read_memory_robust (struct target_ops
*ops
, ULONGEST offset
, LONGEST len
)
2163 VEC(memory_read_result_s
) *result
= 0;
2166 while (xfered
< len
)
2168 struct mem_region
*region
= lookup_mem_region (offset
+ xfered
);
2171 /* If there is no explicit region, a fake one should be created. */
2172 gdb_assert (region
);
2174 if (region
->hi
== 0)
2175 rlen
= len
- xfered
;
2177 rlen
= region
->hi
- offset
;
2179 if (region
->attrib
.mode
== MEM_NONE
|| region
->attrib
.mode
== MEM_WO
)
2181 /* Cannot read this region. Note that we can end up here only
2182 if the region is explicitly marked inaccessible, or
2183 'inaccessible-by-default' is in effect. */
2188 LONGEST to_read
= min (len
- xfered
, rlen
);
2189 gdb_byte
*buffer
= (gdb_byte
*)xmalloc (to_read
);
2191 LONGEST xfer
= target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2192 (gdb_byte
*) buffer
,
2193 offset
+ xfered
, to_read
);
2194 /* Call an observer, notifying them of the xfer progress? */
2197 /* Got an error reading full chunk. See if maybe we can read
2200 read_whatever_is_readable (ops
, offset
+ xfered
,
2201 offset
+ xfered
+ to_read
, &result
);
2206 struct memory_read_result r
;
2208 r
.begin
= offset
+ xfered
;
2209 r
.end
= r
.begin
+ xfer
;
2210 VEC_safe_push (memory_read_result_s
, result
, &r
);
2220 /* An alternative to target_write with progress callbacks. */
2223 target_write_with_progress (struct target_ops
*ops
,
2224 enum target_object object
,
2225 const char *annex
, const gdb_byte
*buf
,
2226 ULONGEST offset
, LONGEST len
,
2227 void (*progress
) (ULONGEST
, void *), void *baton
)
2231 /* Give the progress callback a chance to set up. */
2233 (*progress
) (0, baton
);
2235 while (xfered
< len
)
2237 LONGEST xfer
= target_write_partial (ops
, object
, annex
,
2238 (gdb_byte
*) buf
+ xfered
,
2239 offset
+ xfered
, len
- xfered
);
2247 (*progress
) (xfer
, baton
);
2255 /* For docs on target_write see target.h. */
2258 target_write (struct target_ops
*ops
,
2259 enum target_object object
,
2260 const char *annex
, const gdb_byte
*buf
,
2261 ULONGEST offset
, LONGEST len
)
2263 return target_write_with_progress (ops
, object
, annex
, buf
, offset
, len
,
2267 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2268 the size of the transferred data. PADDING additional bytes are
2269 available in *BUF_P. This is a helper function for
2270 target_read_alloc; see the declaration of that function for more
2274 target_read_alloc_1 (struct target_ops
*ops
, enum target_object object
,
2275 const char *annex
, gdb_byte
**buf_p
, int padding
)
2277 size_t buf_alloc
, buf_pos
;
2281 /* This function does not have a length parameter; it reads the
2282 entire OBJECT). Also, it doesn't support objects fetched partly
2283 from one target and partly from another (in a different stratum,
2284 e.g. a core file and an executable). Both reasons make it
2285 unsuitable for reading memory. */
2286 gdb_assert (object
!= TARGET_OBJECT_MEMORY
);
2288 /* Start by reading up to 4K at a time. The target will throttle
2289 this number down if necessary. */
2291 buf
= xmalloc (buf_alloc
);
2295 n
= target_read_partial (ops
, object
, annex
, &buf
[buf_pos
],
2296 buf_pos
, buf_alloc
- buf_pos
- padding
);
2299 /* An error occurred. */
2305 /* Read all there was. */
2315 /* If the buffer is filling up, expand it. */
2316 if (buf_alloc
< buf_pos
* 2)
2319 buf
= xrealloc (buf
, buf_alloc
);
2326 /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return
2327 the size of the transferred data. See the declaration in "target.h"
2328 function for more information about the return value. */
2331 target_read_alloc (struct target_ops
*ops
, enum target_object object
,
2332 const char *annex
, gdb_byte
**buf_p
)
2334 return target_read_alloc_1 (ops
, object
, annex
, buf_p
, 0);
2337 /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and
2338 returned as a string, allocated using xmalloc. If an error occurs
2339 or the transfer is unsupported, NULL is returned. Empty objects
2340 are returned as allocated but empty strings. A warning is issued
2341 if the result contains any embedded NUL bytes. */
2344 target_read_stralloc (struct target_ops
*ops
, enum target_object object
,
2348 LONGEST transferred
;
2350 transferred
= target_read_alloc_1 (ops
, object
, annex
, &buffer
, 1);
2352 if (transferred
< 0)
2355 if (transferred
== 0)
2356 return xstrdup ("");
2358 buffer
[transferred
] = 0;
2359 if (strlen (buffer
) < transferred
)
2360 warning (_("target object %d, annex %s, "
2361 "contained unexpected null characters"),
2362 (int) object
, annex
? annex
: "(none)");
2364 return (char *) buffer
;
2367 /* Memory transfer methods. */
2370 get_target_memory (struct target_ops
*ops
, CORE_ADDR addr
, gdb_byte
*buf
,
2373 /* This method is used to read from an alternate, non-current
2374 target. This read must bypass the overlay support (as symbols
2375 don't match this target), and GDB's internal cache (wrong cache
2376 for this target). */
2377 if (target_read (ops
, TARGET_OBJECT_RAW_MEMORY
, NULL
, buf
, addr
, len
)
2379 memory_error (EIO
, addr
);
2383 get_target_memory_unsigned (struct target_ops
*ops
, CORE_ADDR addr
,
2384 int len
, enum bfd_endian byte_order
)
2386 gdb_byte buf
[sizeof (ULONGEST
)];
2388 gdb_assert (len
<= sizeof (buf
));
2389 get_target_memory (ops
, addr
, buf
, len
);
2390 return extract_unsigned_integer (buf
, len
, byte_order
);
2394 target_insert_breakpoint (struct gdbarch
*gdbarch
,
2395 struct bp_target_info
*bp_tgt
)
2397 if (!may_insert_breakpoints
)
2399 warning (_("May not insert breakpoints"));
2403 return (*current_target
.to_insert_breakpoint
) (gdbarch
, bp_tgt
);
2407 target_remove_breakpoint (struct gdbarch
*gdbarch
,
2408 struct bp_target_info
*bp_tgt
)
2410 /* This is kind of a weird case to handle, but the permission might
2411 have been changed after breakpoints were inserted - in which case
2412 we should just take the user literally and assume that any
2413 breakpoints should be left in place. */
2414 if (!may_insert_breakpoints
)
2416 warning (_("May not remove breakpoints"));
2420 return (*current_target
.to_remove_breakpoint
) (gdbarch
, bp_tgt
);
2424 target_info (char *args
, int from_tty
)
2426 struct target_ops
*t
;
2427 int has_all_mem
= 0;
2429 if (symfile_objfile
!= NULL
)
2430 printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile
->name
);
2432 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2434 if (!(*t
->to_has_memory
) (t
))
2437 if ((int) (t
->to_stratum
) <= (int) dummy_stratum
)
2440 printf_unfiltered (_("\tWhile running this, "
2441 "GDB does not access memory from...\n"));
2442 printf_unfiltered ("%s:\n", t
->to_longname
);
2443 (t
->to_files_info
) (t
);
2444 has_all_mem
= (*t
->to_has_all_memory
) (t
);
2448 /* This function is called before any new inferior is created, e.g.
2449 by running a program, attaching, or connecting to a target.
2450 It cleans up any state from previous invocations which might
2451 change between runs. This is a subset of what target_preopen
2452 resets (things which might change between targets). */
2455 target_pre_inferior (int from_tty
)
2457 /* Clear out solib state. Otherwise the solib state of the previous
2458 inferior might have survived and is entirely wrong for the new
2459 target. This has been observed on GNU/Linux using glibc 2.3. How
2471 Cannot access memory at address 0xdeadbeef
2474 /* In some OSs, the shared library list is the same/global/shared
2475 across inferiors. If code is shared between processes, so are
2476 memory regions and features. */
2477 if (!gdbarch_has_global_solist (target_gdbarch
))
2479 no_shared_libraries (NULL
, from_tty
);
2481 invalidate_target_mem_regions ();
2483 target_clear_description ();
2487 /* Callback for iterate_over_inferiors. Gets rid of the given
2491 dispose_inferior (struct inferior
*inf
, void *args
)
2493 struct thread_info
*thread
;
2495 thread
= any_thread_of_process (inf
->pid
);
2498 switch_to_thread (thread
->ptid
);
2500 /* Core inferiors actually should be detached, not killed. */
2501 if (target_has_execution
)
2504 target_detach (NULL
, 0);
2510 /* This is to be called by the open routine before it does
2514 target_preopen (int from_tty
)
2518 if (have_inferiors ())
2521 || !have_live_inferiors ()
2522 || query (_("A program is being debugged already. Kill it? ")))
2523 iterate_over_inferiors (dispose_inferior
, NULL
);
2525 error (_("Program not killed."));
2528 /* Calling target_kill may remove the target from the stack. But if
2529 it doesn't (which seems like a win for UDI), remove it now. */
2530 /* Leave the exec target, though. The user may be switching from a
2531 live process to a core of the same program. */
2532 pop_all_targets_above (file_stratum
, 0);
2534 target_pre_inferior (from_tty
);
2537 /* Detach a target after doing deferred register stores. */
2540 target_detach (char *args
, int from_tty
)
2542 struct target_ops
* t
;
2544 if (gdbarch_has_global_breakpoints (target_gdbarch
))
2545 /* Don't remove global breakpoints here. They're removed on
2546 disconnection from the target. */
2549 /* If we're in breakpoints-always-inserted mode, have to remove
2550 them before detaching. */
2551 remove_breakpoints_pid (PIDGET (inferior_ptid
));
2553 prepare_for_detach ();
2555 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2557 if (t
->to_detach
!= NULL
)
2559 t
->to_detach (t
, args
, from_tty
);
2561 fprintf_unfiltered (gdb_stdlog
, "target_detach (%s, %d)\n",
2567 internal_error (__FILE__
, __LINE__
, _("could not find a target to detach"));
2571 target_disconnect (char *args
, int from_tty
)
2573 struct target_ops
*t
;
2575 /* If we're in breakpoints-always-inserted mode or if breakpoints
2576 are global across processes, we have to remove them before
2578 remove_breakpoints ();
2580 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2581 if (t
->to_disconnect
!= NULL
)
2584 fprintf_unfiltered (gdb_stdlog
, "target_disconnect (%s, %d)\n",
2586 t
->to_disconnect (t
, args
, from_tty
);
2594 target_wait (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
2596 struct target_ops
*t
;
2598 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2600 if (t
->to_wait
!= NULL
)
2602 ptid_t retval
= (*t
->to_wait
) (t
, ptid
, status
, options
);
2606 char *status_string
;
2608 status_string
= target_waitstatus_to_string (status
);
2609 fprintf_unfiltered (gdb_stdlog
,
2610 "target_wait (%d, status) = %d, %s\n",
2611 PIDGET (ptid
), PIDGET (retval
),
2613 xfree (status_string
);
2624 target_pid_to_str (ptid_t ptid
)
2626 struct target_ops
*t
;
2628 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2630 if (t
->to_pid_to_str
!= NULL
)
2631 return (*t
->to_pid_to_str
) (t
, ptid
);
2634 return normal_pid_to_str (ptid
);
2638 target_thread_name (struct thread_info
*info
)
2640 struct target_ops
*t
;
2642 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2644 if (t
->to_thread_name
!= NULL
)
2645 return (*t
->to_thread_name
) (info
);
2652 target_resume (ptid_t ptid
, int step
, enum target_signal signal
)
2654 struct target_ops
*t
;
2656 target_dcache_invalidate ();
2658 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2660 if (t
->to_resume
!= NULL
)
2662 t
->to_resume (t
, ptid
, step
, signal
);
2664 fprintf_unfiltered (gdb_stdlog
, "target_resume (%d, %s, %s)\n",
2666 step
? "step" : "continue",
2667 target_signal_to_name (signal
));
2669 registers_changed_ptid (ptid
);
2670 set_executing (ptid
, 1);
2671 set_running (ptid
, 1);
2672 clear_inline_frame_state (ptid
);
2681 target_pass_signals (int numsigs
, unsigned char *pass_signals
)
2683 struct target_ops
*t
;
2685 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2687 if (t
->to_pass_signals
!= NULL
)
2693 fprintf_unfiltered (gdb_stdlog
, "target_pass_signals (%d, {",
2696 for (i
= 0; i
< numsigs
; i
++)
2697 if (pass_signals
[i
])
2698 fprintf_unfiltered (gdb_stdlog
, " %s",
2699 target_signal_to_name (i
));
2701 fprintf_unfiltered (gdb_stdlog
, " })\n");
2704 (*t
->to_pass_signals
) (numsigs
, pass_signals
);
2710 /* Look through the list of possible targets for a target that can
2714 target_follow_fork (int follow_child
)
2716 struct target_ops
*t
;
2718 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2720 if (t
->to_follow_fork
!= NULL
)
2722 int retval
= t
->to_follow_fork (t
, follow_child
);
2725 fprintf_unfiltered (gdb_stdlog
, "target_follow_fork (%d) = %d\n",
2726 follow_child
, retval
);
2731 /* Some target returned a fork event, but did not know how to follow it. */
2732 internal_error (__FILE__
, __LINE__
,
2733 _("could not find a target to follow fork"));
2737 target_mourn_inferior (void)
2739 struct target_ops
*t
;
2741 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2743 if (t
->to_mourn_inferior
!= NULL
)
2745 t
->to_mourn_inferior (t
);
2747 fprintf_unfiltered (gdb_stdlog
, "target_mourn_inferior ()\n");
2749 /* We no longer need to keep handles on any of the object files.
2750 Make sure to release them to avoid unnecessarily locking any
2751 of them while we're not actually debugging. */
2752 bfd_cache_close_all ();
2758 internal_error (__FILE__
, __LINE__
,
2759 _("could not find a target to follow mourn inferior"));
2762 /* Look for a target which can describe architectural features, starting
2763 from TARGET. If we find one, return its description. */
2765 const struct target_desc
*
2766 target_read_description (struct target_ops
*target
)
2768 struct target_ops
*t
;
2770 for (t
= target
; t
!= NULL
; t
= t
->beneath
)
2771 if (t
->to_read_description
!= NULL
)
2773 const struct target_desc
*tdesc
;
2775 tdesc
= t
->to_read_description (t
);
2783 /* The default implementation of to_search_memory.
2784 This implements a basic search of memory, reading target memory and
2785 performing the search here (as opposed to performing the search in on the
2786 target side with, for example, gdbserver). */
2789 simple_search_memory (struct target_ops
*ops
,
2790 CORE_ADDR start_addr
, ULONGEST search_space_len
,
2791 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2792 CORE_ADDR
*found_addrp
)
2794 /* NOTE: also defined in find.c testcase. */
2795 #define SEARCH_CHUNK_SIZE 16000
2796 const unsigned chunk_size
= SEARCH_CHUNK_SIZE
;
2797 /* Buffer to hold memory contents for searching. */
2798 gdb_byte
*search_buf
;
2799 unsigned search_buf_size
;
2800 struct cleanup
*old_cleanups
;
2802 search_buf_size
= chunk_size
+ pattern_len
- 1;
2804 /* No point in trying to allocate a buffer larger than the search space. */
2805 if (search_space_len
< search_buf_size
)
2806 search_buf_size
= search_space_len
;
2808 search_buf
= malloc (search_buf_size
);
2809 if (search_buf
== NULL
)
2810 error (_("Unable to allocate memory to perform the search."));
2811 old_cleanups
= make_cleanup (free_current_contents
, &search_buf
);
2813 /* Prime the search buffer. */
2815 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2816 search_buf
, start_addr
, search_buf_size
) != search_buf_size
)
2818 warning (_("Unable to access target memory at %s, halting search."),
2819 hex_string (start_addr
));
2820 do_cleanups (old_cleanups
);
2824 /* Perform the search.
2826 The loop is kept simple by allocating [N + pattern-length - 1] bytes.
2827 When we've scanned N bytes we copy the trailing bytes to the start and
2828 read in another N bytes. */
2830 while (search_space_len
>= pattern_len
)
2832 gdb_byte
*found_ptr
;
2833 unsigned nr_search_bytes
= min (search_space_len
, search_buf_size
);
2835 found_ptr
= memmem (search_buf
, nr_search_bytes
,
2836 pattern
, pattern_len
);
2838 if (found_ptr
!= NULL
)
2840 CORE_ADDR found_addr
= start_addr
+ (found_ptr
- search_buf
);
2842 *found_addrp
= found_addr
;
2843 do_cleanups (old_cleanups
);
2847 /* Not found in this chunk, skip to next chunk. */
2849 /* Don't let search_space_len wrap here, it's unsigned. */
2850 if (search_space_len
>= chunk_size
)
2851 search_space_len
-= chunk_size
;
2853 search_space_len
= 0;
2855 if (search_space_len
>= pattern_len
)
2857 unsigned keep_len
= search_buf_size
- chunk_size
;
2858 CORE_ADDR read_addr
= start_addr
+ chunk_size
+ keep_len
;
2861 /* Copy the trailing part of the previous iteration to the front
2862 of the buffer for the next iteration. */
2863 gdb_assert (keep_len
== pattern_len
- 1);
2864 memcpy (search_buf
, search_buf
+ chunk_size
, keep_len
);
2866 nr_to_read
= min (search_space_len
- keep_len
, chunk_size
);
2868 if (target_read (ops
, TARGET_OBJECT_MEMORY
, NULL
,
2869 search_buf
+ keep_len
, read_addr
,
2870 nr_to_read
) != nr_to_read
)
2872 warning (_("Unable to access target "
2873 "memory at %s, halting search."),
2874 hex_string (read_addr
));
2875 do_cleanups (old_cleanups
);
2879 start_addr
+= chunk_size
;
2885 do_cleanups (old_cleanups
);
2889 /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the
2890 sequence of bytes in PATTERN with length PATTERN_LEN.
2892 The result is 1 if found, 0 if not found, and -1 if there was an error
2893 requiring halting of the search (e.g. memory read error).
2894 If the pattern is found the address is recorded in FOUND_ADDRP. */
2897 target_search_memory (CORE_ADDR start_addr
, ULONGEST search_space_len
,
2898 const gdb_byte
*pattern
, ULONGEST pattern_len
,
2899 CORE_ADDR
*found_addrp
)
2901 struct target_ops
*t
;
2904 /* We don't use INHERIT to set current_target.to_search_memory,
2905 so we have to scan the target stack and handle targetdebug
2909 fprintf_unfiltered (gdb_stdlog
, "target_search_memory (%s, ...)\n",
2910 hex_string (start_addr
));
2912 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
2913 if (t
->to_search_memory
!= NULL
)
2918 found
= t
->to_search_memory (t
, start_addr
, search_space_len
,
2919 pattern
, pattern_len
, found_addrp
);
2923 /* If a special version of to_search_memory isn't available, use the
2925 found
= simple_search_memory (current_target
.beneath
,
2926 start_addr
, search_space_len
,
2927 pattern
, pattern_len
, found_addrp
);
2931 fprintf_unfiltered (gdb_stdlog
, " = %d\n", found
);
2936 /* Look through the currently pushed targets. If none of them will
2937 be able to restart the currently running process, issue an error
2941 target_require_runnable (void)
2943 struct target_ops
*t
;
2945 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
2947 /* If this target knows how to create a new program, then
2948 assume we will still be able to after killing the current
2949 one. Either killing and mourning will not pop T, or else
2950 find_default_run_target will find it again. */
2951 if (t
->to_create_inferior
!= NULL
)
2954 /* Do not worry about thread_stratum targets that can not
2955 create inferiors. Assume they will be pushed again if
2956 necessary, and continue to the process_stratum. */
2957 if (t
->to_stratum
== thread_stratum
2958 || t
->to_stratum
== arch_stratum
)
2961 error (_("The \"%s\" target does not support \"run\". "
2962 "Try \"help target\" or \"continue\"."),
2966 /* This function is only called if the target is running. In that
2967 case there should have been a process_stratum target and it
2968 should either know how to create inferiors, or not... */
2969 internal_error (__FILE__
, __LINE__
, _("No targets found"));
2972 /* Look through the list of possible targets for a target that can
2973 execute a run or attach command without any other data. This is
2974 used to locate the default process stratum.
2976 If DO_MESG is not NULL, the result is always valid (error() is
2977 called for errors); else, return NULL on error. */
2979 static struct target_ops
*
2980 find_default_run_target (char *do_mesg
)
2982 struct target_ops
**t
;
2983 struct target_ops
*runable
= NULL
;
2988 for (t
= target_structs
; t
< target_structs
+ target_struct_size
;
2991 if ((*t
)->to_can_run
&& target_can_run (*t
))
3001 error (_("Don't know how to %s. Try \"help target\"."), do_mesg
);
3010 find_default_attach (struct target_ops
*ops
, char *args
, int from_tty
)
3012 struct target_ops
*t
;
3014 t
= find_default_run_target ("attach");
3015 (t
->to_attach
) (t
, args
, from_tty
);
3020 find_default_create_inferior (struct target_ops
*ops
,
3021 char *exec_file
, char *allargs
, char **env
,
3024 struct target_ops
*t
;
3026 t
= find_default_run_target ("run");
3027 (t
->to_create_inferior
) (t
, exec_file
, allargs
, env
, from_tty
);
3032 find_default_can_async_p (void)
3034 struct target_ops
*t
;
3036 /* This may be called before the target is pushed on the stack;
3037 look for the default process stratum. If there's none, gdb isn't
3038 configured with a native debugger, and target remote isn't
3040 t
= find_default_run_target (NULL
);
3041 if (t
&& t
->to_can_async_p
)
3042 return (t
->to_can_async_p
) ();
3047 find_default_is_async_p (void)
3049 struct target_ops
*t
;
3051 /* This may be called before the target is pushed on the stack;
3052 look for the default process stratum. If there's none, gdb isn't
3053 configured with a native debugger, and target remote isn't
3055 t
= find_default_run_target (NULL
);
3056 if (t
&& t
->to_is_async_p
)
3057 return (t
->to_is_async_p
) ();
3062 find_default_supports_non_stop (void)
3064 struct target_ops
*t
;
3066 t
= find_default_run_target (NULL
);
3067 if (t
&& t
->to_supports_non_stop
)
3068 return (t
->to_supports_non_stop
) ();
3073 target_supports_non_stop (void)
3075 struct target_ops
*t
;
3077 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3078 if (t
->to_supports_non_stop
)
3079 return t
->to_supports_non_stop ();
3085 find_default_supports_disable_randomization (void)
3087 struct target_ops
*t
;
3089 t
= find_default_run_target (NULL
);
3090 if (t
&& t
->to_supports_disable_randomization
)
3091 return (t
->to_supports_disable_randomization
) ();
3096 target_supports_disable_randomization (void)
3098 struct target_ops
*t
;
3100 for (t
= ¤t_target
; t
!= NULL
; t
= t
->beneath
)
3101 if (t
->to_supports_disable_randomization
)
3102 return t
->to_supports_disable_randomization ();
3108 target_get_osdata (const char *type
)
3110 struct target_ops
*t
;
3112 /* If we're already connected to something that can get us OS
3113 related data, use it. Otherwise, try using the native
3115 if (current_target
.to_stratum
>= process_stratum
)
3116 t
= current_target
.beneath
;
3118 t
= find_default_run_target ("get OS data");
3123 return target_read_stralloc (t
, TARGET_OBJECT_OSDATA
, type
);
3126 /* Determine the current address space of thread PTID. */
3128 struct address_space
*
3129 target_thread_address_space (ptid_t ptid
)
3131 struct address_space
*aspace
;
3132 struct inferior
*inf
;
3133 struct target_ops
*t
;
3135 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3137 if (t
->to_thread_address_space
!= NULL
)
3139 aspace
= t
->to_thread_address_space (t
, ptid
);
3140 gdb_assert (aspace
);
3143 fprintf_unfiltered (gdb_stdlog
,
3144 "target_thread_address_space (%s) = %d\n",
3145 target_pid_to_str (ptid
),
3146 address_space_num (aspace
));
3151 /* Fall-back to the "main" address space of the inferior. */
3152 inf
= find_inferior_pid (ptid_get_pid (ptid
));
3154 if (inf
== NULL
|| inf
->aspace
== NULL
)
3155 internal_error (__FILE__
, __LINE__
,
3156 _("Can't determine the current "
3157 "address space of thread %s\n"),
3158 target_pid_to_str (ptid
));
3164 default_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3166 return (len
<= gdbarch_ptr_bit (target_gdbarch
) / TARGET_CHAR_BIT
);
3170 default_watchpoint_addr_within_range (struct target_ops
*target
,
3172 CORE_ADDR start
, int length
)
3174 return addr
>= start
&& addr
< start
+ length
;
3177 static struct gdbarch
*
3178 default_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
3180 return target_gdbarch
;
3196 return_minus_one (void)
3201 /* Find a single runnable target in the stack and return it. If for
3202 some reason there is more than one, return NULL. */
3205 find_run_target (void)
3207 struct target_ops
**t
;
3208 struct target_ops
*runable
= NULL
;
3213 for (t
= target_structs
; t
< target_structs
+ target_struct_size
; ++t
)
3215 if ((*t
)->to_can_run
&& target_can_run (*t
))
3222 return (count
== 1 ? runable
: NULL
);
3226 * Find the next target down the stack from the specified target.
3230 find_target_beneath (struct target_ops
*t
)
3236 /* The inferior process has died. Long live the inferior! */
3239 generic_mourn_inferior (void)
3243 ptid
= inferior_ptid
;
3244 inferior_ptid
= null_ptid
;
3246 if (!ptid_equal (ptid
, null_ptid
))
3248 int pid
= ptid_get_pid (ptid
);
3249 exit_inferior (pid
);
3252 breakpoint_init_inferior (inf_exited
);
3253 registers_changed ();
3255 reopen_exec_file ();
3256 reinit_frame_cache ();
3258 if (deprecated_detach_hook
)
3259 deprecated_detach_hook ();
3262 /* Helper function for child_wait and the derivatives of child_wait.
3263 HOSTSTATUS is the waitstatus from wait() or the equivalent; store our
3264 translation of that in OURSTATUS. */
3266 store_waitstatus (struct target_waitstatus
*ourstatus
, int hoststatus
)
3268 if (WIFEXITED (hoststatus
))
3270 ourstatus
->kind
= TARGET_WAITKIND_EXITED
;
3271 ourstatus
->value
.integer
= WEXITSTATUS (hoststatus
);
3273 else if (!WIFSTOPPED (hoststatus
))
3275 ourstatus
->kind
= TARGET_WAITKIND_SIGNALLED
;
3276 ourstatus
->value
.sig
= target_signal_from_host (WTERMSIG (hoststatus
));
3280 ourstatus
->kind
= TARGET_WAITKIND_STOPPED
;
3281 ourstatus
->value
.sig
= target_signal_from_host (WSTOPSIG (hoststatus
));
3285 /* Convert a normal process ID to a string. Returns the string in a
3289 normal_pid_to_str (ptid_t ptid
)
3291 static char buf
[32];
3293 xsnprintf (buf
, sizeof buf
, "process %d", ptid_get_pid (ptid
));
3298 dummy_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
3300 return normal_pid_to_str (ptid
);
3303 /* Error-catcher for target_find_memory_regions. */
3305 dummy_find_memory_regions (find_memory_region_ftype ignore1
, void *ignore2
)
3307 error (_("Command not implemented for this target."));
3311 /* Error-catcher for target_make_corefile_notes. */
3313 dummy_make_corefile_notes (bfd
*ignore1
, int *ignore2
)
3315 error (_("Command not implemented for this target."));
3319 /* Error-catcher for target_get_bookmark. */
3321 dummy_get_bookmark (char *ignore1
, int ignore2
)
3327 /* Error-catcher for target_goto_bookmark. */
3329 dummy_goto_bookmark (gdb_byte
*ignore
, int from_tty
)
3334 /* Set up the handful of non-empty slots needed by the dummy target
3338 init_dummy_target (void)
3340 dummy_target
.to_shortname
= "None";
3341 dummy_target
.to_longname
= "None";
3342 dummy_target
.to_doc
= "";
3343 dummy_target
.to_attach
= find_default_attach
;
3344 dummy_target
.to_detach
=
3345 (void (*)(struct target_ops
*, char *, int))target_ignore
;
3346 dummy_target
.to_create_inferior
= find_default_create_inferior
;
3347 dummy_target
.to_can_async_p
= find_default_can_async_p
;
3348 dummy_target
.to_is_async_p
= find_default_is_async_p
;
3349 dummy_target
.to_supports_non_stop
= find_default_supports_non_stop
;
3350 dummy_target
.to_supports_disable_randomization
3351 = find_default_supports_disable_randomization
;
3352 dummy_target
.to_pid_to_str
= dummy_pid_to_str
;
3353 dummy_target
.to_stratum
= dummy_stratum
;
3354 dummy_target
.to_find_memory_regions
= dummy_find_memory_regions
;
3355 dummy_target
.to_make_corefile_notes
= dummy_make_corefile_notes
;
3356 dummy_target
.to_get_bookmark
= dummy_get_bookmark
;
3357 dummy_target
.to_goto_bookmark
= dummy_goto_bookmark
;
3358 dummy_target
.to_xfer_partial
= default_xfer_partial
;
3359 dummy_target
.to_has_all_memory
= (int (*) (struct target_ops
*)) return_zero
;
3360 dummy_target
.to_has_memory
= (int (*) (struct target_ops
*)) return_zero
;
3361 dummy_target
.to_has_stack
= (int (*) (struct target_ops
*)) return_zero
;
3362 dummy_target
.to_has_registers
= (int (*) (struct target_ops
*)) return_zero
;
3363 dummy_target
.to_has_execution
3364 = (int (*) (struct target_ops
*, ptid_t
)) return_zero
;
3365 dummy_target
.to_stopped_by_watchpoint
= return_zero
;
3366 dummy_target
.to_stopped_data_address
=
3367 (int (*) (struct target_ops
*, CORE_ADDR
*)) return_zero
;
3368 dummy_target
.to_magic
= OPS_MAGIC
;
3372 debug_to_open (char *args
, int from_tty
)
3374 debug_target
.to_open (args
, from_tty
);
3376 fprintf_unfiltered (gdb_stdlog
, "target_open (%s, %d)\n", args
, from_tty
);
3380 target_close (struct target_ops
*targ
, int quitting
)
3382 if (targ
->to_xclose
!= NULL
)
3383 targ
->to_xclose (targ
, quitting
);
3384 else if (targ
->to_close
!= NULL
)
3385 targ
->to_close (quitting
);
3388 fprintf_unfiltered (gdb_stdlog
, "target_close (%d)\n", quitting
);
3392 target_attach (char *args
, int from_tty
)
3394 struct target_ops
*t
;
3396 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3398 if (t
->to_attach
!= NULL
)
3400 t
->to_attach (t
, args
, from_tty
);
3402 fprintf_unfiltered (gdb_stdlog
, "target_attach (%s, %d)\n",
3408 internal_error (__FILE__
, __LINE__
,
3409 _("could not find a target to attach"));
3413 target_thread_alive (ptid_t ptid
)
3415 struct target_ops
*t
;
3417 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3419 if (t
->to_thread_alive
!= NULL
)
3423 retval
= t
->to_thread_alive (t
, ptid
);
3425 fprintf_unfiltered (gdb_stdlog
, "target_thread_alive (%d) = %d\n",
3426 PIDGET (ptid
), retval
);
3436 target_find_new_threads (void)
3438 struct target_ops
*t
;
3440 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3442 if (t
->to_find_new_threads
!= NULL
)
3444 t
->to_find_new_threads (t
);
3446 fprintf_unfiltered (gdb_stdlog
, "target_find_new_threads ()\n");
3454 target_stop (ptid_t ptid
)
3458 warning (_("May not interrupt or stop the target, ignoring attempt"));
3462 (*current_target
.to_stop
) (ptid
);
3466 debug_to_post_attach (int pid
)
3468 debug_target
.to_post_attach (pid
);
3470 fprintf_unfiltered (gdb_stdlog
, "target_post_attach (%d)\n", pid
);
3473 /* Return a pretty printed form of target_waitstatus.
3474 Space for the result is malloc'd, caller must free. */
3477 target_waitstatus_to_string (const struct target_waitstatus
*ws
)
3479 const char *kind_str
= "status->kind = ";
3483 case TARGET_WAITKIND_EXITED
:
3484 return xstrprintf ("%sexited, status = %d",
3485 kind_str
, ws
->value
.integer
);
3486 case TARGET_WAITKIND_STOPPED
:
3487 return xstrprintf ("%sstopped, signal = %s",
3488 kind_str
, target_signal_to_name (ws
->value
.sig
));
3489 case TARGET_WAITKIND_SIGNALLED
:
3490 return xstrprintf ("%ssignalled, signal = %s",
3491 kind_str
, target_signal_to_name (ws
->value
.sig
));
3492 case TARGET_WAITKIND_LOADED
:
3493 return xstrprintf ("%sloaded", kind_str
);
3494 case TARGET_WAITKIND_FORKED
:
3495 return xstrprintf ("%sforked", kind_str
);
3496 case TARGET_WAITKIND_VFORKED
:
3497 return xstrprintf ("%svforked", kind_str
);
3498 case TARGET_WAITKIND_EXECD
:
3499 return xstrprintf ("%sexecd", kind_str
);
3500 case TARGET_WAITKIND_SYSCALL_ENTRY
:
3501 return xstrprintf ("%sentered syscall", kind_str
);
3502 case TARGET_WAITKIND_SYSCALL_RETURN
:
3503 return xstrprintf ("%sexited syscall", kind_str
);
3504 case TARGET_WAITKIND_SPURIOUS
:
3505 return xstrprintf ("%sspurious", kind_str
);
3506 case TARGET_WAITKIND_IGNORE
:
3507 return xstrprintf ("%signore", kind_str
);
3508 case TARGET_WAITKIND_NO_HISTORY
:
3509 return xstrprintf ("%sno-history", kind_str
);
3510 case TARGET_WAITKIND_NO_RESUMED
:
3511 return xstrprintf ("%sno-resumed", kind_str
);
3513 return xstrprintf ("%sunknown???", kind_str
);
3518 debug_print_register (const char * func
,
3519 struct regcache
*regcache
, int regno
)
3521 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
3523 fprintf_unfiltered (gdb_stdlog
, "%s ", func
);
3524 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
)
3525 && gdbarch_register_name (gdbarch
, regno
) != NULL
3526 && gdbarch_register_name (gdbarch
, regno
)[0] != '\0')
3527 fprintf_unfiltered (gdb_stdlog
, "(%s)",
3528 gdbarch_register_name (gdbarch
, regno
));
3530 fprintf_unfiltered (gdb_stdlog
, "(%d)", regno
);
3531 if (regno
>= 0 && regno
< gdbarch_num_regs (gdbarch
))
3533 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3534 int i
, size
= register_size (gdbarch
, regno
);
3535 unsigned char buf
[MAX_REGISTER_SIZE
];
3537 regcache_raw_collect (regcache
, regno
, buf
);
3538 fprintf_unfiltered (gdb_stdlog
, " = ");
3539 for (i
= 0; i
< size
; i
++)
3541 fprintf_unfiltered (gdb_stdlog
, "%02x", buf
[i
]);
3543 if (size
<= sizeof (LONGEST
))
3545 ULONGEST val
= extract_unsigned_integer (buf
, size
, byte_order
);
3547 fprintf_unfiltered (gdb_stdlog
, " %s %s",
3548 core_addr_to_string_nz (val
), plongest (val
));
3551 fprintf_unfiltered (gdb_stdlog
, "\n");
3555 target_fetch_registers (struct regcache
*regcache
, int regno
)
3557 struct target_ops
*t
;
3559 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3561 if (t
->to_fetch_registers
!= NULL
)
3563 t
->to_fetch_registers (t
, regcache
, regno
);
3565 debug_print_register ("target_fetch_registers", regcache
, regno
);
3572 target_store_registers (struct regcache
*regcache
, int regno
)
3574 struct target_ops
*t
;
3576 if (!may_write_registers
)
3577 error (_("Writing to registers is not allowed (regno %d)"), regno
);
3579 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3581 if (t
->to_store_registers
!= NULL
)
3583 t
->to_store_registers (t
, regcache
, regno
);
3586 debug_print_register ("target_store_registers", regcache
, regno
);
3596 target_core_of_thread (ptid_t ptid
)
3598 struct target_ops
*t
;
3600 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3602 if (t
->to_core_of_thread
!= NULL
)
3604 int retval
= t
->to_core_of_thread (t
, ptid
);
3607 fprintf_unfiltered (gdb_stdlog
,
3608 "target_core_of_thread (%d) = %d\n",
3609 PIDGET (ptid
), retval
);
3618 target_verify_memory (const gdb_byte
*data
, CORE_ADDR memaddr
, ULONGEST size
)
3620 struct target_ops
*t
;
3622 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3624 if (t
->to_verify_memory
!= NULL
)
3626 int retval
= t
->to_verify_memory (t
, data
, memaddr
, size
);
3629 fprintf_unfiltered (gdb_stdlog
,
3630 "target_verify_memory (%s, %s) = %d\n",
3631 paddress (target_gdbarch
, memaddr
),
3641 /* The documentation for this function is in its prototype declaration in
3645 target_insert_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3647 struct target_ops
*t
;
3649 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3650 if (t
->to_insert_mask_watchpoint
!= NULL
)
3654 ret
= t
->to_insert_mask_watchpoint (t
, addr
, mask
, rw
);
3657 fprintf_unfiltered (gdb_stdlog
, "\
3658 target_insert_mask_watchpoint (%s, %s, %d) = %d\n",
3659 core_addr_to_string (addr
),
3660 core_addr_to_string (mask
), rw
, ret
);
3668 /* The documentation for this function is in its prototype declaration in
3672 target_remove_mask_watchpoint (CORE_ADDR addr
, CORE_ADDR mask
, int rw
)
3674 struct target_ops
*t
;
3676 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3677 if (t
->to_remove_mask_watchpoint
!= NULL
)
3681 ret
= t
->to_remove_mask_watchpoint (t
, addr
, mask
, rw
);
3684 fprintf_unfiltered (gdb_stdlog
, "\
3685 target_remove_mask_watchpoint (%s, %s, %d) = %d\n",
3686 core_addr_to_string (addr
),
3687 core_addr_to_string (mask
), rw
, ret
);
3695 /* The documentation for this function is in its prototype declaration
3699 target_masked_watch_num_registers (CORE_ADDR addr
, CORE_ADDR mask
)
3701 struct target_ops
*t
;
3703 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3704 if (t
->to_masked_watch_num_registers
!= NULL
)
3705 return t
->to_masked_watch_num_registers (t
, addr
, mask
);
3710 /* The documentation for this function is in its prototype declaration
3714 target_ranged_break_num_registers (void)
3716 struct target_ops
*t
;
3718 for (t
= current_target
.beneath
; t
!= NULL
; t
= t
->beneath
)
3719 if (t
->to_ranged_break_num_registers
!= NULL
)
3720 return t
->to_ranged_break_num_registers (t
);
3726 debug_to_prepare_to_store (struct regcache
*regcache
)
3728 debug_target
.to_prepare_to_store (regcache
);
3730 fprintf_unfiltered (gdb_stdlog
, "target_prepare_to_store ()\n");
3734 deprecated_debug_xfer_memory (CORE_ADDR memaddr
, bfd_byte
*myaddr
, int len
,
3735 int write
, struct mem_attrib
*attrib
,
3736 struct target_ops
*target
)
3740 retval
= debug_target
.deprecated_xfer_memory (memaddr
, myaddr
, len
, write
,
3743 fprintf_unfiltered (gdb_stdlog
,
3744 "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d",
3745 paddress (target_gdbarch
, memaddr
), len
,
3746 write
? "write" : "read", retval
);
3752 fputs_unfiltered (", bytes =", gdb_stdlog
);
3753 for (i
= 0; i
< retval
; i
++)
3755 if ((((intptr_t) &(myaddr
[i
])) & 0xf) == 0)
3757 if (targetdebug
< 2 && i
> 0)
3759 fprintf_unfiltered (gdb_stdlog
, " ...");
3762 fprintf_unfiltered (gdb_stdlog
, "\n");
3765 fprintf_unfiltered (gdb_stdlog
, " %02x", myaddr
[i
] & 0xff);
3769 fputc_unfiltered ('\n', gdb_stdlog
);
3775 debug_to_files_info (struct target_ops
*target
)
3777 debug_target
.to_files_info (target
);
3779 fprintf_unfiltered (gdb_stdlog
, "target_files_info (xxx)\n");
3783 debug_to_insert_breakpoint (struct gdbarch
*gdbarch
,
3784 struct bp_target_info
*bp_tgt
)
3788 retval
= debug_target
.to_insert_breakpoint (gdbarch
, bp_tgt
);
3790 fprintf_unfiltered (gdb_stdlog
,
3791 "target_insert_breakpoint (%s, xxx) = %ld\n",
3792 core_addr_to_string (bp_tgt
->placed_address
),
3793 (unsigned long) retval
);
3798 debug_to_remove_breakpoint (struct gdbarch
*gdbarch
,
3799 struct bp_target_info
*bp_tgt
)
3803 retval
= debug_target
.to_remove_breakpoint (gdbarch
, bp_tgt
);
3805 fprintf_unfiltered (gdb_stdlog
,
3806 "target_remove_breakpoint (%s, xxx) = %ld\n",
3807 core_addr_to_string (bp_tgt
->placed_address
),
3808 (unsigned long) retval
);
3813 debug_to_can_use_hw_breakpoint (int type
, int cnt
, int from_tty
)
3817 retval
= debug_target
.to_can_use_hw_breakpoint (type
, cnt
, from_tty
);
3819 fprintf_unfiltered (gdb_stdlog
,
3820 "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n",
3821 (unsigned long) type
,
3822 (unsigned long) cnt
,
3823 (unsigned long) from_tty
,
3824 (unsigned long) retval
);
3829 debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
3833 retval
= debug_target
.to_region_ok_for_hw_watchpoint (addr
, len
);
3835 fprintf_unfiltered (gdb_stdlog
,
3836 "target_region_ok_for_hw_watchpoint (%s, %ld) = %s\n",
3837 core_addr_to_string (addr
), (unsigned long) len
,
3838 core_addr_to_string (retval
));
3843 debug_to_can_accel_watchpoint_condition (CORE_ADDR addr
, int len
, int rw
,
3844 struct expression
*cond
)
3848 retval
= debug_target
.to_can_accel_watchpoint_condition (addr
, len
,
3851 fprintf_unfiltered (gdb_stdlog
,
3852 "target_can_accel_watchpoint_condition "
3853 "(%s, %d, %d, %s) = %ld\n",
3854 core_addr_to_string (addr
), len
, rw
,
3855 host_address_to_string (cond
), (unsigned long) retval
);
3860 debug_to_stopped_by_watchpoint (void)
3864 retval
= debug_target
.to_stopped_by_watchpoint ();
3866 fprintf_unfiltered (gdb_stdlog
,
3867 "target_stopped_by_watchpoint () = %ld\n",
3868 (unsigned long) retval
);
3873 debug_to_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr
)
3877 retval
= debug_target
.to_stopped_data_address (target
, addr
);
3879 fprintf_unfiltered (gdb_stdlog
,
3880 "target_stopped_data_address ([%s]) = %ld\n",
3881 core_addr_to_string (*addr
),
3882 (unsigned long)retval
);
3887 debug_to_watchpoint_addr_within_range (struct target_ops
*target
,
3889 CORE_ADDR start
, int length
)
3893 retval
= debug_target
.to_watchpoint_addr_within_range (target
, addr
,
3896 fprintf_filtered (gdb_stdlog
,
3897 "target_watchpoint_addr_within_range (%s, %s, %d) = %d\n",
3898 core_addr_to_string (addr
), core_addr_to_string (start
),
3904 debug_to_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
3905 struct bp_target_info
*bp_tgt
)
3909 retval
= debug_target
.to_insert_hw_breakpoint (gdbarch
, bp_tgt
);
3911 fprintf_unfiltered (gdb_stdlog
,
3912 "target_insert_hw_breakpoint (%s, xxx) = %ld\n",
3913 core_addr_to_string (bp_tgt
->placed_address
),
3914 (unsigned long) retval
);
3919 debug_to_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
3920 struct bp_target_info
*bp_tgt
)
3924 retval
= debug_target
.to_remove_hw_breakpoint (gdbarch
, bp_tgt
);
3926 fprintf_unfiltered (gdb_stdlog
,
3927 "target_remove_hw_breakpoint (%s, xxx) = %ld\n",
3928 core_addr_to_string (bp_tgt
->placed_address
),
3929 (unsigned long) retval
);
3934 debug_to_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
3935 struct expression
*cond
)
3939 retval
= debug_target
.to_insert_watchpoint (addr
, len
, type
, cond
);
3941 fprintf_unfiltered (gdb_stdlog
,
3942 "target_insert_watchpoint (%s, %d, %d, %s) = %ld\n",
3943 core_addr_to_string (addr
), len
, type
,
3944 host_address_to_string (cond
), (unsigned long) retval
);
3949 debug_to_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
3950 struct expression
*cond
)
3954 retval
= debug_target
.to_remove_watchpoint (addr
, len
, type
, cond
);
3956 fprintf_unfiltered (gdb_stdlog
,
3957 "target_remove_watchpoint (%s, %d, %d, %s) = %ld\n",
3958 core_addr_to_string (addr
), len
, type
,
3959 host_address_to_string (cond
), (unsigned long) retval
);
3964 debug_to_terminal_init (void)
3966 debug_target
.to_terminal_init ();
3968 fprintf_unfiltered (gdb_stdlog
, "target_terminal_init ()\n");
3972 debug_to_terminal_inferior (void)
3974 debug_target
.to_terminal_inferior ();
3976 fprintf_unfiltered (gdb_stdlog
, "target_terminal_inferior ()\n");
3980 debug_to_terminal_ours_for_output (void)
3982 debug_target
.to_terminal_ours_for_output ();
3984 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours_for_output ()\n");
3988 debug_to_terminal_ours (void)
3990 debug_target
.to_terminal_ours ();
3992 fprintf_unfiltered (gdb_stdlog
, "target_terminal_ours ()\n");
3996 debug_to_terminal_save_ours (void)
3998 debug_target
.to_terminal_save_ours ();
4000 fprintf_unfiltered (gdb_stdlog
, "target_terminal_save_ours ()\n");
4004 debug_to_terminal_info (char *arg
, int from_tty
)
4006 debug_target
.to_terminal_info (arg
, from_tty
);
4008 fprintf_unfiltered (gdb_stdlog
, "target_terminal_info (%s, %d)\n", arg
,
4013 debug_to_load (char *args
, int from_tty
)
4015 debug_target
.to_load (args
, from_tty
);
4017 fprintf_unfiltered (gdb_stdlog
, "target_load (%s, %d)\n", args
, from_tty
);
4021 debug_to_post_startup_inferior (ptid_t ptid
)
4023 debug_target
.to_post_startup_inferior (ptid
);
4025 fprintf_unfiltered (gdb_stdlog
, "target_post_startup_inferior (%d)\n",
4030 debug_to_insert_fork_catchpoint (int pid
)
4034 retval
= debug_target
.to_insert_fork_catchpoint (pid
);
4036 fprintf_unfiltered (gdb_stdlog
, "target_insert_fork_catchpoint (%d) = %d\n",
4043 debug_to_remove_fork_catchpoint (int pid
)
4047 retval
= debug_target
.to_remove_fork_catchpoint (pid
);
4049 fprintf_unfiltered (gdb_stdlog
, "target_remove_fork_catchpoint (%d) = %d\n",
4056 debug_to_insert_vfork_catchpoint (int pid
)
4060 retval
= debug_target
.to_insert_vfork_catchpoint (pid
);
4062 fprintf_unfiltered (gdb_stdlog
, "target_insert_vfork_catchpoint (%d) = %d\n",
4069 debug_to_remove_vfork_catchpoint (int pid
)
4073 retval
= debug_target
.to_remove_vfork_catchpoint (pid
);
4075 fprintf_unfiltered (gdb_stdlog
, "target_remove_vfork_catchpoint (%d) = %d\n",
4082 debug_to_insert_exec_catchpoint (int pid
)
4086 retval
= debug_target
.to_insert_exec_catchpoint (pid
);
4088 fprintf_unfiltered (gdb_stdlog
, "target_insert_exec_catchpoint (%d) = %d\n",
4095 debug_to_remove_exec_catchpoint (int pid
)
4099 retval
= debug_target
.to_remove_exec_catchpoint (pid
);
4101 fprintf_unfiltered (gdb_stdlog
, "target_remove_exec_catchpoint (%d) = %d\n",
4108 debug_to_has_exited (int pid
, int wait_status
, int *exit_status
)
4112 has_exited
= debug_target
.to_has_exited (pid
, wait_status
, exit_status
);
4114 fprintf_unfiltered (gdb_stdlog
, "target_has_exited (%d, %d, %d) = %d\n",
4115 pid
, wait_status
, *exit_status
, has_exited
);
4121 debug_to_can_run (void)
4125 retval
= debug_target
.to_can_run ();
4127 fprintf_unfiltered (gdb_stdlog
, "target_can_run () = %d\n", retval
);
4132 static struct gdbarch
*
4133 debug_to_thread_architecture (struct target_ops
*ops
, ptid_t ptid
)
4135 struct gdbarch
*retval
;
4137 retval
= debug_target
.to_thread_architecture (ops
, ptid
);
4139 fprintf_unfiltered (gdb_stdlog
,
4140 "target_thread_architecture (%s) = %s [%s]\n",
4141 target_pid_to_str (ptid
),
4142 host_address_to_string (retval
),
4143 gdbarch_bfd_arch_info (retval
)->printable_name
);
4148 debug_to_stop (ptid_t ptid
)
4150 debug_target
.to_stop (ptid
);
4152 fprintf_unfiltered (gdb_stdlog
, "target_stop (%s)\n",
4153 target_pid_to_str (ptid
));
4157 debug_to_rcmd (char *command
,
4158 struct ui_file
*outbuf
)
4160 debug_target
.to_rcmd (command
, outbuf
);
4161 fprintf_unfiltered (gdb_stdlog
, "target_rcmd (%s, ...)\n", command
);
4165 debug_to_pid_to_exec_file (int pid
)
4169 exec_file
= debug_target
.to_pid_to_exec_file (pid
);
4171 fprintf_unfiltered (gdb_stdlog
, "target_pid_to_exec_file (%d) = %s\n",
4178 setup_target_debug (void)
4180 memcpy (&debug_target
, ¤t_target
, sizeof debug_target
);
4182 current_target
.to_open
= debug_to_open
;
4183 current_target
.to_post_attach
= debug_to_post_attach
;
4184 current_target
.to_prepare_to_store
= debug_to_prepare_to_store
;
4185 current_target
.deprecated_xfer_memory
= deprecated_debug_xfer_memory
;
4186 current_target
.to_files_info
= debug_to_files_info
;
4187 current_target
.to_insert_breakpoint
= debug_to_insert_breakpoint
;
4188 current_target
.to_remove_breakpoint
= debug_to_remove_breakpoint
;
4189 current_target
.to_can_use_hw_breakpoint
= debug_to_can_use_hw_breakpoint
;
4190 current_target
.to_insert_hw_breakpoint
= debug_to_insert_hw_breakpoint
;
4191 current_target
.to_remove_hw_breakpoint
= debug_to_remove_hw_breakpoint
;
4192 current_target
.to_insert_watchpoint
= debug_to_insert_watchpoint
;
4193 current_target
.to_remove_watchpoint
= debug_to_remove_watchpoint
;
4194 current_target
.to_stopped_by_watchpoint
= debug_to_stopped_by_watchpoint
;
4195 current_target
.to_stopped_data_address
= debug_to_stopped_data_address
;
4196 current_target
.to_watchpoint_addr_within_range
4197 = debug_to_watchpoint_addr_within_range
;
4198 current_target
.to_region_ok_for_hw_watchpoint
4199 = debug_to_region_ok_for_hw_watchpoint
;
4200 current_target
.to_can_accel_watchpoint_condition
4201 = debug_to_can_accel_watchpoint_condition
;
4202 current_target
.to_terminal_init
= debug_to_terminal_init
;
4203 current_target
.to_terminal_inferior
= debug_to_terminal_inferior
;
4204 current_target
.to_terminal_ours_for_output
4205 = debug_to_terminal_ours_for_output
;
4206 current_target
.to_terminal_ours
= debug_to_terminal_ours
;
4207 current_target
.to_terminal_save_ours
= debug_to_terminal_save_ours
;
4208 current_target
.to_terminal_info
= debug_to_terminal_info
;
4209 current_target
.to_load
= debug_to_load
;
4210 current_target
.to_post_startup_inferior
= debug_to_post_startup_inferior
;
4211 current_target
.to_insert_fork_catchpoint
= debug_to_insert_fork_catchpoint
;
4212 current_target
.to_remove_fork_catchpoint
= debug_to_remove_fork_catchpoint
;
4213 current_target
.to_insert_vfork_catchpoint
= debug_to_insert_vfork_catchpoint
;
4214 current_target
.to_remove_vfork_catchpoint
= debug_to_remove_vfork_catchpoint
;
4215 current_target
.to_insert_exec_catchpoint
= debug_to_insert_exec_catchpoint
;
4216 current_target
.to_remove_exec_catchpoint
= debug_to_remove_exec_catchpoint
;
4217 current_target
.to_has_exited
= debug_to_has_exited
;
4218 current_target
.to_can_run
= debug_to_can_run
;
4219 current_target
.to_stop
= debug_to_stop
;
4220 current_target
.to_rcmd
= debug_to_rcmd
;
4221 current_target
.to_pid_to_exec_file
= debug_to_pid_to_exec_file
;
4222 current_target
.to_thread_architecture
= debug_to_thread_architecture
;
4226 static char targ_desc
[] =
4227 "Names of targets and files being debugged.\nShows the entire \
4228 stack of targets currently in use (including the exec-file,\n\
4229 core-file, and process, if any), as well as the symbol file name.";
4232 do_monitor_command (char *cmd
,
4235 if ((current_target
.to_rcmd
4236 == (void (*) (char *, struct ui_file
*)) tcomplain
)
4237 || (current_target
.to_rcmd
== debug_to_rcmd
4238 && (debug_target
.to_rcmd
4239 == (void (*) (char *, struct ui_file
*)) tcomplain
)))
4240 error (_("\"monitor\" command not supported by this target."));
4241 target_rcmd (cmd
, gdb_stdtarg
);
4244 /* Print the name of each layers of our target stack. */
4247 maintenance_print_target_stack (char *cmd
, int from_tty
)
4249 struct target_ops
*t
;
4251 printf_filtered (_("The current target stack is:\n"));
4253 for (t
= target_stack
; t
!= NULL
; t
= t
->beneath
)
4255 printf_filtered (" - %s (%s)\n", t
->to_shortname
, t
->to_longname
);
4259 /* Controls if async mode is permitted. */
4260 int target_async_permitted
= 0;
4262 /* The set command writes to this variable. If the inferior is
4263 executing, linux_nat_async_permitted is *not* updated. */
4264 static int target_async_permitted_1
= 0;
4267 set_maintenance_target_async_permitted (char *args
, int from_tty
,
4268 struct cmd_list_element
*c
)
4270 if (have_live_inferiors ())
4272 target_async_permitted_1
= target_async_permitted
;
4273 error (_("Cannot change this setting while the inferior is running."));
4276 target_async_permitted
= target_async_permitted_1
;
4280 show_maintenance_target_async_permitted (struct ui_file
*file
, int from_tty
,
4281 struct cmd_list_element
*c
,
4284 fprintf_filtered (file
,
4285 _("Controlling the inferior in "
4286 "asynchronous mode is %s.\n"), value
);
4289 /* Temporary copies of permission settings. */
4291 static int may_write_registers_1
= 1;
4292 static int may_write_memory_1
= 1;
4293 static int may_insert_breakpoints_1
= 1;
4294 static int may_insert_tracepoints_1
= 1;
4295 static int may_insert_fast_tracepoints_1
= 1;
4296 static int may_stop_1
= 1;
4298 /* Make the user-set values match the real values again. */
4301 update_target_permissions (void)
4303 may_write_registers_1
= may_write_registers
;
4304 may_write_memory_1
= may_write_memory
;
4305 may_insert_breakpoints_1
= may_insert_breakpoints
;
4306 may_insert_tracepoints_1
= may_insert_tracepoints
;
4307 may_insert_fast_tracepoints_1
= may_insert_fast_tracepoints
;
4308 may_stop_1
= may_stop
;
4311 /* The one function handles (most of) the permission flags in the same
4315 set_target_permissions (char *args
, int from_tty
,
4316 struct cmd_list_element
*c
)
4318 if (target_has_execution
)
4320 update_target_permissions ();
4321 error (_("Cannot change this setting while the inferior is running."));
4324 /* Make the real values match the user-changed values. */
4325 may_write_registers
= may_write_registers_1
;
4326 may_insert_breakpoints
= may_insert_breakpoints_1
;
4327 may_insert_tracepoints
= may_insert_tracepoints_1
;
4328 may_insert_fast_tracepoints
= may_insert_fast_tracepoints_1
;
4329 may_stop
= may_stop_1
;
4330 update_observer_mode ();
4333 /* Set memory write permission independently of observer mode. */
4336 set_write_memory_permission (char *args
, int from_tty
,
4337 struct cmd_list_element
*c
)
4339 /* Make the real values match the user-changed values. */
4340 may_write_memory
= may_write_memory_1
;
4341 update_observer_mode ();
4346 initialize_targets (void)
4348 init_dummy_target ();
4349 push_target (&dummy_target
);
4351 add_info ("target", target_info
, targ_desc
);
4352 add_info ("files", target_info
, targ_desc
);
4354 add_setshow_zinteger_cmd ("target", class_maintenance
, &targetdebug
, _("\
4355 Set target debugging."), _("\
4356 Show target debugging."), _("\
4357 When non-zero, target debugging is enabled. Higher numbers are more\n\
4358 verbose. Changes do not take effect until the next \"run\" or \"target\"\n\
4362 &setdebuglist
, &showdebuglist
);
4364 add_setshow_boolean_cmd ("trust-readonly-sections", class_support
,
4365 &trust_readonly
, _("\
4366 Set mode for reading from readonly sections."), _("\
4367 Show mode for reading from readonly sections."), _("\
4368 When this mode is on, memory reads from readonly sections (such as .text)\n\
4369 will be read from the object file instead of from the target. This will\n\
4370 result in significant performance improvement for remote targets."),
4372 show_trust_readonly
,
4373 &setlist
, &showlist
);
4375 add_com ("monitor", class_obscure
, do_monitor_command
,
4376 _("Send a command to the remote monitor (remote targets only)."));
4378 add_cmd ("target-stack", class_maintenance
, maintenance_print_target_stack
,
4379 _("Print the name of each layer of the internal target stack."),
4380 &maintenanceprintlist
);
4382 add_setshow_boolean_cmd ("target-async", no_class
,
4383 &target_async_permitted_1
, _("\
4384 Set whether gdb controls the inferior in asynchronous mode."), _("\
4385 Show whether gdb controls the inferior in asynchronous mode."), _("\
4386 Tells gdb whether to control the inferior in asynchronous mode."),
4387 set_maintenance_target_async_permitted
,
4388 show_maintenance_target_async_permitted
,
4392 add_setshow_boolean_cmd ("stack-cache", class_support
,
4393 &stack_cache_enabled_p_1
, _("\
4394 Set cache use for stack access."), _("\
4395 Show cache use for stack access."), _("\
4396 When on, use the data cache for all stack access, regardless of any\n\
4397 configured memory regions. This improves remote performance significantly.\n\
4398 By default, caching for stack access is on."),
4399 set_stack_cache_enabled_p
,
4400 show_stack_cache_enabled_p
,
4401 &setlist
, &showlist
);
4403 add_setshow_boolean_cmd ("may-write-registers", class_support
,
4404 &may_write_registers_1
, _("\
4405 Set permission to write into registers."), _("\
4406 Show permission to write into registers."), _("\
4407 When this permission is on, GDB may write into the target's registers.\n\
4408 Otherwise, any sort of write attempt will result in an error."),
4409 set_target_permissions
, NULL
,
4410 &setlist
, &showlist
);
4412 add_setshow_boolean_cmd ("may-write-memory", class_support
,
4413 &may_write_memory_1
, _("\
4414 Set permission to write into target memory."), _("\
4415 Show permission to write into target memory."), _("\
4416 When this permission is on, GDB may write into the target's memory.\n\
4417 Otherwise, any sort of write attempt will result in an error."),
4418 set_write_memory_permission
, NULL
,
4419 &setlist
, &showlist
);
4421 add_setshow_boolean_cmd ("may-insert-breakpoints", class_support
,
4422 &may_insert_breakpoints_1
, _("\
4423 Set permission to insert breakpoints in the target."), _("\
4424 Show permission to insert breakpoints in the target."), _("\
4425 When this permission is on, GDB may insert breakpoints in the program.\n\
4426 Otherwise, any sort of insertion attempt will result in an error."),
4427 set_target_permissions
, NULL
,
4428 &setlist
, &showlist
);
4430 add_setshow_boolean_cmd ("may-insert-tracepoints", class_support
,
4431 &may_insert_tracepoints_1
, _("\
4432 Set permission to insert tracepoints in the target."), _("\
4433 Show permission to insert tracepoints in the target."), _("\
4434 When this permission is on, GDB may insert tracepoints in the program.\n\
4435 Otherwise, any sort of insertion attempt will result in an error."),
4436 set_target_permissions
, NULL
,
4437 &setlist
, &showlist
);
4439 add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support
,
4440 &may_insert_fast_tracepoints_1
, _("\
4441 Set permission to insert fast tracepoints in the target."), _("\
4442 Show permission to insert fast tracepoints in the target."), _("\
4443 When this permission is on, GDB may insert fast tracepoints.\n\
4444 Otherwise, any sort of insertion attempt will result in an error."),
4445 set_target_permissions
, NULL
,
4446 &setlist
, &showlist
);
4448 add_setshow_boolean_cmd ("may-interrupt", class_support
,
4450 Set permission to interrupt or signal the target."), _("\
4451 Show permission to interrupt or signal the target."), _("\
4452 When this permission is on, GDB may interrupt/stop the target's execution.\n\
4453 Otherwise, any attempt to interrupt or stop will be ignored."),
4454 set_target_permissions
, NULL
,
4455 &setlist
, &showlist
);
4458 target_dcache
= dcache_init ();